Remove deprecated cpp auth function #13761

Job	Run time
check_and_prepare	21s
build-android-macos-14	28m 58s
build-tvos-macos-14	47m 40s
build-android-windows-latest	40m 22s
build-ios-macos-14	1h 18m 18s
build-desktop-ubuntu-22.04-x64-openssl	26m 35s
build-android-ubuntu-22.04	27m 22s
build-desktop-windows-latest-x64-openssl	1h 1m 25s
test-android-windows-latest-android_target-gameloop	8m 38s
test-android-macos-14-emulator_ftl_target-gameloop	10m 19s
test-android-ubuntu-22.04-emulator_ftl_target-gameloop	9m 6s
test-android-windows-latest-emulator_ftl_target-gameloop	10m 31s
test-android-ubuntu-22.04-android_target-gameloop	9m 42s
test-android-macos-14-android_target-gameloop	11m 5s
test-tvos-macos-14-tvos_simulator	19m 40s
test-desktop-ubuntu-22.04-x64-openssl	4m 4s
test-desktop-windows-latest-x64-openssl	8m 57s
test-ios-macos-14-ios_target-gameloop	11m 33s
test-ios-macos-14-simulator_target-gameloop	19m 59s
summarize-results	20s
attempt-retry	0s
	7h 14m 55s

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