Revert "Add a system TextToSpeech implementation that initiates ..."

Revert "Add CTS tests for TextToSpeech connection related functi..."

Revert submission 13547465-ttsproxy

Reason for revert: Setup wizard crashes due to "Service not registered: android.speech.tts.TextToSpeech$SystemConnection"
Reverted Changes:
Id4059e460:Add CTS tests for TextToSpeech connection related ...
Ie17800bae:Add a system TextToSpeech implementation that init...

Bug: 180519958
Change-Id: Ie43c485bd4d0f76f8bb0a1dc77d6d85d46ff8377
Test: Locally reverted this change and no longer see the exception in SUW we saw before.