test(apple): remove unused test suite (#2268)

Author: tido64

example/Example-Tests.podspec

@@ -22,5 +22,4 @@ Pod::Spec.new do |s|
   s.user_target_xcconfig  = { 'ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES' => '$(inherited)' }
 
   s.source_files = 'ios/ExampleTests/**/*.{m,swift}'
-  s.osx.exclude_files = 'ios/ExampleTests/ReactNativePerformanceTests.m'
 end

example/ios/ExampleTests/ReactNativePerformanceTests.m

@@ -17,8 +17,6 @@ if [[ $platform == ios/* ]]; then
   else
     destination='-destination "generic/platform=iOS Simulator"'
   fi
-
-  skip_testing='-skip-testing:ReactTestAppTests/ReactNativePerformanceTests'
 elif [[ $platform == macos/* ]]; then
   destination=''
   skip_testing=''
@@ -32,8 +30,6 @@ elif [[ $platform == visionos/* ]]; then
   else
     destination='-destination "generic/platform=visionOS Simulator"'
   fi
-
-  skip_testing='-skip-testing:ReactTestAppTests/ReactNativePerformanceTests'
 else
   echo "Cannot detect platform: $workspace"
   exit 1