Drop pyright ignores for services fixed by run_stt/run_tts widening

Deepgram STT, Gradium TTS, Smallest STT, and xAI STT/TTS had exactly
one pyright error each, all of them the AsyncGenerator return-type
mismatch resolved in 08fe9157c. Remove them from the ignore list.

pyrightconfig.json

@@ -57,7 +57,6 @@
     "src/pipecat/services/deepgram/flux/stt.py",
     "src/pipecat/services/deepgram/sagemaker/stt.py",
     "src/pipecat/services/deepgram/sagemaker/tts.py",
-    "src/pipecat/services/deepgram/stt.py",
     "src/pipecat/services/deepgram/tts.py",
     "src/pipecat/services/elevenlabs/stt.py",
     "src/pipecat/services/elevenlabs/tts.py",
@@ -71,7 +70,6 @@
     "src/pipecat/services/google/tts.py",
     "src/pipecat/services/google/vertex/llm.py",
     "src/pipecat/services/gradium/stt.py",
-    "src/pipecat/services/gradium/tts.py",
     "src/pipecat/services/groq/tts.py",
     "src/pipecat/services/heygen/api_interactive_avatar.py",
     "src/pipecat/services/heygen/base_api.py",
@@ -109,7 +107,6 @@
     "src/pipecat/services/sarvam/stt.py",
     "src/pipecat/services/sarvam/tts.py",
     "src/pipecat/services/simli/video.py",
-    "src/pipecat/services/smallest/stt.py",
     "src/pipecat/services/smallest/tts.py",
     "src/pipecat/services/soniox/stt.py",
     "src/pipecat/services/speechmatics/stt.py",
@@ -123,8 +120,6 @@
     "src/pipecat/services/whisper/stt.py",
     "src/pipecat/services/xai/realtime/events.py",
     "src/pipecat/services/xai/realtime/llm.py",
-    "src/pipecat/services/xai/stt.py",
-    "src/pipecat/services/xai/tts.py",
     "src/pipecat/services/xtts/tts.py",
     "src/pipecat/transports/base_output.py",
     "src/pipecat/transports/daily/transport.py",