Fix SpeakerManager init with data items

TTS/tts/utils/speakers.py

@@ -63,7 +63,6 @@ class SpeakerManager:
         use_cuda: bool = False,
     ):
 
-        self.data_items = []
         self.d_vectors = {}
         self.speaker_ids = {}
         self.clip_ids = []
@@ -72,7 +71,7 @@ class SpeakerManager:
         self.use_cuda = use_cuda
 
         if data_items:
-            self.speaker_ids, self.speaker_names, _ = self.parse_speakers_from_data(self.data_items)
+            self.speaker_ids, _ = self.parse_speakers_from_data(data_items)
 
         if d_vectors_file_path:
             self.set_d_vectors_from_file(d_vectors_file_path)