Remove deprecated Google Mobile Ads (GMA) C++ SDK #13765

Job	Run time
check_and_prepare	29s
build-tvos-macos-14	58m 24s
build-ios-macos-14	1h 11m 46s
build-desktop-windows-latest-x64-openssl	1h 35m 21s
build-desktop-ubuntu-22.04-x64-openssl	38m 22s
build-android-windows-latest	1h 15m 32s
build-android-ubuntu-22.04	51m 40s
build-android-macos-14	1h 5m 53s
test-tvos-macos-14-tvos_simulator	23m 16s
test-ios-macos-14-ios_target-gameloop	11m 0s
test-ios-macos-14-simulator_target-gameloop	33m 13s
test-android-ubuntu-22.04-emulator_ftl_target-gameloop	8m 23s
test-android-macos-14-android_target-gameloop	9m 19s
test-android-macos-14-emulator_ftl_target-gameloop	12m 19s
test-android-windows-latest-android_target-gameloop	20m 8s
test-android-ubuntu-22.04-android_target-gameloop	10m 51s
test-android-windows-latest-emulator_ftl_target-gameloop	29m 2s
test-desktop-windows-latest-x64-openssl	8m 34s
test-desktop-ubuntu-22.04-x64-openssl	4m 13s
summarize-results	18s
attempt-retry	0s
	10h 28m 3s

Provide feedback