Update beta samples to GA [(#2008)](GoogleCloudPlatform/python-docs-samples#2008)

Author: nnegrey

samples/audio_profile.py

@@ -24,10 +24,11 @@
 import argparse
 
 
+# [START tts_synthesize_text_audio_profile]
 # [START tts_synthesize_text_audio_profile_beta]
 def synthesize_text_with_audio_profile(text, output, effects_profile_id):
     """Synthesizes speech from the input string of text."""
-    from google.cloud import texttospeech_v1beta1 as texttospeech
+    from google.cloud import texttospeech
 
     client = texttospeech.TextToSpeechClient()
 
@@ -51,6 +52,7 @@ def synthesize_text_with_audio_profile(text, output, effects_profile_id):
         print('Audio content written to file "%s"' % output)
 
 # [END tts_synthesize_text_audio_profile_beta]
+# [END tts_synthesize_text_audio_profile]
 
 
 if __name__ == '__main__':

samples/requirements.txt

@@ -1 +1 @@
-google-cloud-texttospeech==0.3.0
+google-cloud-texttospeech==0.4.0