Rework tab_capture_end2end_tests' test definition.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 8e54d5edb58e330a3a7a9d49d7b2a37f6377b3bd..c669f15f64aaee37b6b7c2da86c436a5205c2fae 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1135,15 +1135,6 @@ if (!is_android) {
       "//testing/scripts/run_telemetry_as_googletest.py",
     ]
   }
-
-  # TODO(GYP_GONE): Delete this after we've converted everything to GN.
-  # This target exist only for compatibility w/ GYP.
-  group("tab_capture_end2end_tests") {
-    testonly = true
-    deps = [
-      ":browser_tests",
-    ]
-  }
 }
 
 static_library("browser_tests_runner") {