[BUILD] Remove gmock from GTEST_BOTH_LIBRARIES (#2437) #8862

Job	Run time
CMake clang 14 (maintainer mode, sync)	14m 22s
CMake gcc 12 (maintainer mode, async)	7m 46s
CMake clang 14 (maintainer mode, abiv2)	13m 43s
CMake gcc 12 (maintainer mode, sync)	8m 5s
CMake clang 14 (maintainer mode, async)	13m 54s
CMake msvc (maintainer mode)	6m 50s
CMake test (without otlp-exporter)	4m 34s
CMake test (with abseil)	4m 49s
CMake test (with modern protobuf,grpc and abseil)	18m 8s
CMake test (with opentracing-shim)	4m 13s
CMake test (with otlp-exporter)	13m 30s
CMake C++14 test(GCC)	4m 18s
CMake C++17 test(GCC)	4m 41s
CMake C++20 test(Clang with libc++)	9m 43s
CMake C++20 test(GCC)	8m 12s
CMake test (without otlp-exporter and with async export)	5m 27s
Bazel noexcept	11m 30s
Bazel nortti	12m 52s
Bazel	12m 33s
Bazel with async export	12m 57s
Bazel valgrind	14m 12s
Bazel with external abseil	12m 42s
CMake do not install test (with otlp-exporter)	14m 3s
CMake install test (with abseil)	5m 7s
Plugin -> CMake	56s
CMake test (build shared libraries with otlp-exporter and static gRPC)	13m 39s
Bazel asan config	15m 21s
Bazel on MacOS	18m 53s
Bazel tsan config	12m 44s
Benchmark	8m 30s
Copyright	6s
Format	14s
CMake -> exporter proto	12m 16s
Bazel Windows	23m 45s
Plugin -> CMake Windows	6m 53s
CMake (With async export) -> exporter proto	12m 52s
CMake -> exporter proto (Build as DLL)	12m 41s
Code coverage	13m 40s
DocFX check	55s
markdown-lint	8s
misspell	4s
	6h 31m 48s

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