Remove PER_PROFILE_IME_ENABLED property

PER_PROFILE_IME_ENABLED is default enabled in Q. We no longer need this
property.

Bug: 135775619
Test: atest CtsInputMethodTestCases CtsInputMethodServiceHostTestCases
Change-Id: Ia957118fabc2dd794cb4f5018692b8548b85233a
10 files changed