dev-cpp/gtest: Clean up cmake configure options

'-DBUILD_GTEST=ON' and '-DINSTALL_GMOCK=ON' aren't valid anymore (gtest
will always be built and if gmock is built, it will be installed).
`-Dgtest_build_samples` and '-Dgtest_disable_pthreads' don't depend on
USE flags and have always defaulted to "OFF".

Package-Manager: Portage-2.3.49, Repoman-2.3.10

dev-cpp/gtest/gtest-9999.ebuild

@@ -39,11 +39,7 @@ pkg_setup() {
 multilib_src_configure() {
 	local mycmakeargs=(
 		-DBUILD_GMOCK=ON
-		-DBUILD_GTEST=ON
-		-DINSTALL_GMOCK=ON
 		-DINSTALL_GTEST=ON
-		-Dgtest_build_samples=OFF
-		-Dgtest_disable_pthreads=OFF
 
 		# currently only static libs work
 		# due to numerous ODR violations