revert back example changes

Author: eff-kay

examples/speech_to_text_sync.py

@@ -3,7 +3,7 @@
 # Replace `API_KEY` with your SlasML API token. This example still runs without
 # the API token but usage will be limited
 API_KEY = "YOUR_API_KEY"
-API_KEY = None
+
 service_provider = SpeechToText.ServiceProvider.WHISPER
 audio_filepath = "test.mp3"
 

examples/text_to_speech_sync.py

@@ -3,7 +3,7 @@
 # Replace `API_KEY` with your SlasML API token. This example still runs without
 # the API token but usage will be limited
 API_KEY = "YOUR_API_KEY"
-API_KEY = None
+
 service_provider = TextToSpeech.ServiceProvider.AWS
 input_text = "To be or not to be, that is the question!"