Remove keyboards.py and some refactor

mybot/keyboards.py

@@ -1 +0,0 @@
-# keyboards will be defined here

mybot/logger.py

@@ -27,4 +27,3 @@ def create_logger(name: str,
         logger.addHandler(file_handler)
 
     return logger
-

mybot/states.py

@@ -12,6 +12,3 @@ def get_state_storage(config: StateStorageConfig):
     else:
         raise RuntimeWarning(f"Unknown state storage type: '{config.type}'")
     return state_storage
-
-
-# states will be defined here