Remove useless code

lib/xmet/raob.py

@@ -281,8 +281,6 @@ class RAOBObs():
         return ret
 
     def parse_ttaa_sample(self, tokens: list[str]) -> dict:
-        sample = SoundingSample()
-
         if tokens[0][0:2] == '99':
             hp = self.parse_pressure(tokens[0])
         else:
@@ -303,8 +301,6 @@ class RAOBObs():
             'wind_dir':   wind['dir']
         }
 
-        return sample
-
     def parse_ttaa(self) -> dict:
         #
         # Return None if there is no height data up to 100mb.