Remove references to blimp from the build files.

testing/buildbot/chromium.linux.json

 {
   "Android Arm64 Builder (dbg)": {
     "additional_compile_targets": [
       "all"
     ]
   },
   "Android Builder": {
     "additional_compile_targets": [
       "cronet_test_instrumentation_apk",
       "system_webview_apk"
@@ skipping 102 matching lines @@
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
         },
         "test": "base_unittests"
       },
       {
-        "override_isolate_target": "blimp_unittests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "cipd_packages": [
-            {
-              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
-              "location": "bin",
-              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
-            }
-          ],
-          "dimension_sets": [
-            {
-              "android_devices": "4",
-              "device_os": "KTU84P",
-              "device_type": "hammerhead"
-            }
-          ],
-          "output_links": [
-            {
-              "link": [
-                "https://luci-logdog.appspot.com/v/?s",
-                "=android%2Fswarming%2Flogcats%2F",
-                "${TASK_ID}%2F%2B%2Funified_logcats"
-              ],
-              "name": "shard #${SHARD_INDEX} logcats"
-            }
-          ]
-        },
-        "test": "blimp_unittests"
-      },
-      {
         "override_isolate_target": "blink_heap_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "cipd_packages": [
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
               "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
@@ skipping 1189 matching lines @@
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
         },
         "test": "base_unittests"
       },
       {
-        "override_isolate_target": "blimp_unittests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "cipd_packages": [
-            {
-              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
-              "location": "bin",
-              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
-            }
-          ],
-          "dimension_sets": [
-            {
-              "android_devices": "4",
-              "device_os": "KTU84P",
-              "device_type": "hammerhead"
-            }
-          ],
-          "output_links": [
-            {
-              "link": [
-                "https://luci-logdog.appspot.com/v/?s",
-                "=android%2Fswarming%2Flogcats%2F",
-                "${TASK_ID}%2F%2B%2Funified_logcats"
-              ],
-              "name": "shard #${SHARD_INDEX} logcats"
-            }
-          ]
-        },
-        "test": "blimp_unittests"
-      },
-      {
         "override_isolate_target": "blink_heap_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "cipd_packages": [
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
               "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
@@ skipping 1089 matching lines @@
         "test": "ui_junit_tests"
       },
       {
         "test": "webapk_client_junit_tests"
       },
       {
         "test": "webapk_shell_apk_junit_tests"
       }
     ]
   },
-  "Blimp Linux (dbg)": {
-    "gtest_tests": [
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": false
-        },
-        "test": "blimp_unittests"
-      }
-    ]
-  },
   "Cast Linux": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "base_unittests"
       },
       {
         "swarming": {
@@ skipping 193 matching lines @@
         "test": "base_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "battor_agent_unittests"
       },
       {
         "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "blimp_unittests"
-      },
-      {
-        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 5
         },
         "test": "browser_tests"
       },
       {
         "args": [
           "--enable-browser-side-navigation"
         ],
         "name": "browser_side_navigation_browser_tests",
@@ skipping 631 matching lines @@
         "test": "base_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "battor_agent_unittests"
       },
       {
         "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "blimp_unittests"
-      },
-      {
-        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 10
         },
         "test": "browser_tests"
       },
       {
         "args": [
           "--enable-browser-side-navigation"
         ],
         "name": "browser_side_navigation_browser_tests",
@@ skipping 527 matching lines @@
         "test": "base_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "battor_agent_unittests"
       },
       {
         "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "blimp_unittests"
-      },
-      {
-        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 10
         },
         "test": "browser_tests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "cacheinvalidation_unittests"
@@ skipping 302 matching lines @@
         "override_compile_targets": [
           "telemetry_unittests_run"
         ],
         "swarming": {
           "can_use_on_swarming_builders": true
         }
       }
     ]
   }
 }