DNR: Remove redundant parameterized test suite initialization.

BUG=None

Change-Id: Ia758064db72c5c58b86df4764a94e2430f23b00d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2210781
Auto-Submit: Karan Bhatia <karandeepb@chromium.org>
Reviewed-by: David Bertoni <dbertoni@chromium.org>
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770751}

chrome/browser/extensions/api/declarative_net_request/declarative_net_request_browsertest.cc

@@ -4293,10 +4293,6 @@ INSTANTIATE_TEST_SUITE_P(All,
                          DeclarativeNetRequestBrowserTest_Packed,
                          ::testing::Values(ExtensionLoadType::PACKED));
 
-INSTANTIATE_TEST_SUITE_P(All,
-                         DeclarativeNetRequestBrowserTest_Unpacked,
-                         ::testing::Values(ExtensionLoadType::UNPACKED));
-
 }  // namespace
 }  // namespace declarative_net_request
 }  // namespace extensions