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
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index dfdd15c..f9ddee4 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -9197,10 +9197,6 @@
         in->stream.create_mmap_buffer = in_create_mmap_buffer;
         in->stream.get_mmap_position = in_get_mmap_position;
         ALOGV("%s: USECASE_AUDIO_RECORD_MMAP", __func__);
-    } else if (in->realtime) {
-        in->config = pcm_config_audio_capture_rt;
-        in->config.format = pcm_format_from_audio_format(config->format);
-        in->af_period_multiplier = af_period_multiplier;
     } else if (is_usb_dev && may_use_hifi_record) {
         in->usecase = USECASE_AUDIO_RECORD_HIFI;
         in->config = pcm_config_audio_capture;