Disable swiftshader_unittests on some non-swarming GPU FYI mac bots

testing/buildbot/chromium.gpu.fyi.json

Index: testing/buildbot/chromium.gpu.fyi.json
diff --git a/testing/buildbot/chromium.gpu.fyi.json b/testing/buildbot/chromium.gpu.fyi.json
index 67cbbd93f972c229047c1244ee2de4cf74c586d9..8d6eaaa3e7f0ee0978ffd485e5d2cc2d16e76100 100644
--- a/testing/buildbot/chromium.gpu.fyi.json
+++ b/testing/buildbot/chromium.gpu.fyi.json
@@ -6205,20 +6205,6 @@
         },
         "test": "service_unittests",
         "use_xvfb": false
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": false,
-          "dimension_sets": [
-            {
-              "gpu": "1002:6821",
-              "hidpi": "1",
-              "os": "Mac"
-            }
-          ]
-        },
-        "test": "swiftshader_unittests",
-        "use_xvfb": false
       }
     ],
     "isolated_scripts": [
@@ -6651,20 +6637,6 @@
         },
         "test": "service_unittests",
         "use_xvfb": false
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": false,
-          "dimension_sets": [
-            {
-              "gpu": "10de:0fe9",
-              "hidpi": "1",
-              "os": "Mac"
-            }
-          ]
-        },
-        "test": "swiftshader_unittests",
-        "use_xvfb": false
       }
     ],
     "isolated_scripts": [
@@ -7944,19 +7916,6 @@
         },
         "test": "gles2_conform_test",
         "use_xvfb": false
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": false,
-          "dimension_sets": [
-            {
-              "gpu": "1002:679e",
-              "os": "Mac-10.10"
-            }
-          ]
-        },
-        "test": "swiftshader_unittests",
-        "use_xvfb": false
       }
     ],
     "isolated_scripts": [