Remove build-side specification of instrumentation tests.

scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.linux",
       "--builder",
       "Android Builder (dbg)",
@@ skipping 234 matching lines @@
       "[SLAVE_BUILD]/src",
       "--build-tool",
       "ninja",
       "--compiler",
       "goma",
       "--goma-jsonstatus",
       "/path/to/tmp/json",
       "--goma-dir",
       "[BUILD]/goma",
       "--",
-      "android_webview_test_apk",
       "base_junit_tests",
       "browser_tests_apk_run",
       "chrome_junit_tests",
-      "chrome_public_test_apk",
-      "chrome_sync_shell_test_apk",
       "components_junit_tests",
       "content_junit_tests",
-      "content_shell_test_apk",
       "cronet_test_instrumentation_apk",
       "junit_unit_tests",
       "net_junit_tests",
       "system_webview_apk"
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },
     "name": "compile",
@@ skipping 84 matching lines @@
     "~followup_annotations": [
       "@@@STEP_TEXT@Android Tests (dbg)@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]