Editing: Remove empty ParameterizedVisibleUnitsSentenceTest.

The ParameterizedVisibleUnitsSentenceTest test suite does not have any
test case. This CL removes it.

This problem was discovered by attempting to roll googletest past CL
315255779, which causes test binaries to fail when they include test
suites / parametrized tests that are not instantiated, and when they
include empty test suites.

Bug: 1163396
Change-Id: I95213add5ed04cd08ef1b208141c9903075b686e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2615659
Auto-Submit: Victor Costan <pwnall@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841142}

third_party/blink/renderer/core/editing/visible_units_sentence_test.cc

@@ -49,22 +49,6 @@ class VisibleUnitsSentenceTest : public EditingTestBase {
   }
 };
 
-class ParameterizedVisibleUnitsSentenceTest
-    : public ::testing::WithParamInterface<bool>,
-      private ScopedLayoutNGForTest,
-      public VisibleUnitsSentenceTest {
- protected:
-  ParameterizedVisibleUnitsSentenceTest() : ScopedLayoutNGForTest(GetParam()) {}
-
-  bool LayoutNGEnabled() const {
-    return RuntimeEnabledFeatures::LayoutNGEnabled();
-  }
-};
-
-INSTANTIATE_TEST_SUITE_P(All,
-                         ParameterizedVisibleUnitsSentenceTest,
-                         ::testing::Bool());
-
 TEST_F(VisibleUnitsSentenceTest, startOfSentence) {
   const char* body_content =
       "<span id=host><b slot='#one' id=one>1</b><b slot='#two' "