Fix win coverage config - part 3

The existing setup of enabling code coverage in try builder is
incorrect, and this CL fixes the issue with the following steps:
1. 'Win x64 Builder', 'Win10 x64 Release (NVIDIA)' and
   'Win10 Tests x64' have isolate_profile_data mixin.
2. 'win10_chromium_x64_rel_ng' is switched to mirror the builders
   mentioned in 1 instead of their code coverage counterparts.
3. Remove the code coverage counterparts of the builders in 1.

Bug: 1004523
Change-Id: I34348739e7ef9ea608593ba75f31781d1b84d486
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2197858
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Auto-Submit: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789681}

testing/buildbot/waterfalls.pyl

@@ -2945,21 +2945,6 @@
           'isolated_scripts': 'rendering_desktop_representative_perf_tests_isolated_scripts',
         },
       },
-      # TODO(crbug.com/1004523) Delete 'Win10 x64 Release (NVIDIA) Code Coverage'
-      # when 'Win10 x64 Release (NVIDIA)' has code coverage enabled by default.
-      'Win10 x64 Release (NVIDIA) Code Coverage': {
-        'browser_config': 'release_x64',
-        'os_type': 'win',
-        'mixins': [
-          'isolate_profile_data',
-          'win10_nvidia_quadro_p400_stable',
-        ],
-        'test_suites': {
-          'gtest_tests': 'gpu_win_gtests',
-          'gpu_telemetry_tests': 'gpu_common_win_telemetry_tests',
-          'isolated_scripts': 'rendering_desktop_representative_perf_tests_isolated_scripts',
-        },
-      },
     },
   },
   {
@@ -4943,19 +4928,6 @@
           'scripts': 'check_network_annotations_script',
         },
       },
-      # TODO(crbug.com/1004523) Delete 'Win x64 Builder Code Coverage' when
-      # coverage is turned on in 'Win x64 Builder' by default.
-      'Win x64 Builder Code Coverage': {
-        'mixins': [
-          'isolate_profile_data',
-        ],
-        'additional_compile_targets': [
-          'pdf_fuzzers'
-        ],
-        'test_suites': {
-          'scripts': 'check_network_annotations_script',
-        },
-      },
       # 'Win10 Tests x64' and 'Win7 Tests (1)' should have the same set of
       # additional_compile_targets and test_suites.
       # Added pixel tests on Win 10 only.
@@ -4980,20 +4952,6 @@
           'isolated_scripts': 'chromium_win_dbg_isolated_scripts',
         },
       },
-      # TODO(crbug.com/1004523) Delete 'Win10 Tests x64 Code Coverage' when
-      # coverage is turned on in 'Win10 Tests x64' by default.
-      'Win10 Tests x64 Code Coverage': {
-        'mixins': [
-          'isolate_profile_data',
-          'x86-64',
-          'win10',
-        ],
-        'test_suites': {
-          'gtest_tests': 'chromium_win10_gtests',
-          'isolated_scripts': 'chromium_win_rel_isolated_scripts',
-          'scripts': 'chromium_scripts',
-        },
-      },
       'Win7 (32) Tests': {
         'mixins': [
           'x86-32',