Having __exit__ method without __enter__ does not make sense

See https://www.python.org/dev/peps/pep-0343/

The cached file handles should be closed by the
default destructor anyway.

Author: ddemidov

ev3dev/ev3dev.py

@@ -82,12 +82,6 @@ def __matches(self, attribute, pattern):
         value = self._get_attribute(attribute)
         return any([value.find(pat) >= 0 for pat in list(pattern)])
 
-    def __exit__(self, exc_type, exc_value, traceback):
-        print("Well, this is embarassing....")
-        for f in self.filehandle_cache:
-            print(f)
-            f.close()
-
     def __attribute_file( self, attribute, mode, reopen=False ):
         """Manages the file handle cache and opening the files in the correct mode"""