hal: remove unnecessary check for low-latency-record usecase

For voip call with using fast flag, it selects low-latency-record
usecase first. Then during usecase selection, audio-record-voip
usecase is not selected even if setting AUDIO_SOURCE_VOICE_COMMUNICATION
for the voip call. This is due to the condition of low-latency-record
usecase is checked again before voip call. 

Fix it to remove unnecessary check for low-latency-record usecase.

Change-Id: I0b36769cc643458a8b43e1c4472f336a232652ac