Deprecate `ThinClient` and remove `ThinClient` from `bench-tps` #11206

Job	Run time
android (ubuntu-20.04, x86_64-linux-android)	2m 51s
android (ubuntu-20.04, aarch64-linux-android)	2m 46s
ios (macos-11, aarch64-apple-ios)	6m 33s
android (ubuntu-20.04, i686-linux-android)	2m 54s
ios (macos-11, x86_64-apple-ios)	6m 56s
android (ubuntu-20.04, armv7-linux-androideabi)	3m 19s
ios (macos-11, aarch64-apple-darwin)	8m 13s
ios (macos-11, x86_64-apple-darwin)	6m 15s
error_reporting	0s
	39m 47s

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