[tvOS] remove unused codes related to watchOS
[tvOS] remove unused codes related to watchOS

katsuyoshi/RubyMotion,katsuyoshi/RubyMotion,hboon/RubyMotion,katsuyoshi/RubyMotion,HipByte/RubyMotion,hboon/RubyMotion,hboon/RubyMotion,HipByte/RubyMotion,HipByte/RubyMotion,katsuyoshi/RubyMotion