Remove RestrictFilter() function and RSAPerformance test

Since we want to migrate to using GTEST_SKIP to skip unit tests instead
of GTEST_FILTER, we can remove the RestrictFilter() function which
filters the tests out using GTEST_FILTER. To do this, the RSAPerformance
test needs to be removed, which is acceptable since no one uses this
test anymore. However, b/299135804 is being used to track a new way to
either execute/track permance.

Bug: 251240681, 299135804
Change-Id: Ife59c468ee127f4c39d3be91707ca38a061b7895

libwvdrmengine/cdm/core/test/test_base.cpp

@@ -416,7 +416,6 @@ bool WvCdmTestBase::Initialize(int argc, const char* const argv[],
                                const std::string& extra_help_text) {
   Properties::Init();
   bool is_cast_receiver = false;
-  bool filter_tests = true;
   bool show_usage = false;
   int verbosity = 0;
 
@@ -436,8 +435,6 @@ bool WvCdmTestBase::Initialize(int argc, const char* const argv[],
       show_usage = true;
     } else if (arg == "--verbose" || arg == "-v") {
       ++verbosity;
-    } else if (arg == "--no_filter") {
-      filter_tests = false;
     } else if (arg == "--cast") {
       is_cast_receiver = true;
     } else if (arg == "--fake_sleep") {
@@ -568,12 +565,6 @@ bool WvCdmTestBase::Initialize(int argc, const char* const argv[],
     // support being a cast receiver.
     wvoec::global_features.set_cast_receiver(is_cast_receiver);
   }
-  // If the user requests --no_filter, we don't change the filter, otherwise, we
-  // filter out features that are not supported.
-  if (filter_tests) {
-    ::testing::GTEST_FLAG(filter) =
-        wvoec::global_features.RestrictFilter(::testing::GTEST_FLAG(filter));
-  }
 
   skip_sleepy_tests_ = UnwrapOptionalBool(skip_sleepy_tests, skip_slow_tests);
   skip_decryption_stress_tests_ =