Merge "Remove InputMethodSubtypeCompatWrapper"

...com/android/inputmethod/compat/AbstractCompatWrapper.java

java/src/com/android/inputmethod/compat/CompatUtils.java

...d/inputmethod/compat/InputMethodManagerCompatWrapper.java

...d/inputmethod/compat/InputMethodServiceCompatWrapper.java

...d/inputmethod/compat/InputMethodSubtypeCompatWrapper.java

java/src/com/android/inputmethod/keyboard/KeyboardSet.java

java/src/com/android/inputmethod/latin/LatinIME.java

java/src/com/android/inputmethod/latin/SubtypeSwitcher.java

java/src/com/android/inputmethod/latin/SubtypeUtils.java

...s/src/com/android/inputmethod/latin/ArbitrarySubtype.java

tests/src/com/android/inputmethod/latin/InputTestsBase.java