added delete player data in db only script

nba_data/management/commands/delete_player_data.py

@@ -0,0 +1,12 @@
+from django.core.management.base import BaseCommand
+from nba_data.models import PlayerData
+
+class Command(BaseCommand):
+    # Provides a description for use with the custom django management command (python manage.py help).
+    help = 'Delete all player data' 
+    
+    def handle(self, *args, **options):
+        # Delete all player data
+        PlayerData.objects.all().delete()
+        
+        self.stdout.write(self.style.SUCCESS('Successfully deleted all players in DB'))