Revert "Also set TMPDIR and TEMP environment variables"

This reverts commit daa833ea.

slapos/recipe/cmmi/__init__.py

@@ -143,10 +143,7 @@ class Recipe(object):
         # environment.
         for key in self.environ:
             self.environ[key] = self.environ[key] % os.environ
-
-        # Always define TMPDIR, TEMP and TMP
-        for key in ('TMPDIR', 'TEMP', 'TMP'):
-            self.environ[key] = os.path.join(options['default-location'], 'tmp')
+        self.environ['TMP'] = os.path.join(options['default-location'], 'tmp')
 
     def augmented_environment(self):
         """Returns a dictionary containing the current environment variables