[blinkpy] Disable universal blink_python_tests coverage check

This change removes the '--coverage' flag added in crrev.com/c/3759441.
Some steps (retry with patch, Flake Endorser, etc.) pass an explicit
list of tests where coverage should not be measured or cause failures.

Bug: 1347302, 1344709
Change-Id: Ie464504a679392c67c74266c081883b22478d019
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3827263
Reviewed-by: Thomas Anderson <[email protected]>
Auto-Submit: Jonathan Lee <[email protected]>
Commit-Queue: Thomas Anderson <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1034114}
diff --git a/BUILD.gn b/BUILD.gn
index b0456ba..dca156f 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1585,12 +1585,9 @@
 
   script_test("blink_python_tests") {
     script = "//testing/scripts/run_isolated_script_test.py"
-    args = [
-      "@WrappedPath(" +
-          rebase_path("//third_party/blink/tools/run_blinkpy_tests.py",
-                      root_build_dir) + ")",
-      "--coverage",
-    ]
+    args = [ "@WrappedPath(" +
+             rebase_path("//third_party/blink/tools/run_blinkpy_tests.py",
+                         root_build_dir) + ")" ]
 
     data = [
       # These tests use //build/android/devil_chromium.py even when !is_android,