Revert "Merge branch 'partial-update-on-input'"

This reverts commit a2cc828e58, reversing
changes made to 87f185e62b.

bumblebee/input.py

@@ -45,7 +45,6 @@ def read_input(inp):
             try:
                 event = json.loads(line)
                 if "instance" in event:
-                    inp.event = event
                     inp.callback(event)
                     inp.redraw()
                 else:
@@ -67,7 +66,6 @@ class I3BarInput(object):
         self.global_id = str(uuid.uuid4())
         self.need_event = False
         self.has_event = False
-        self.event = None
         self._condition = threading.Condition()
 
     def start(self):
@@ -89,10 +87,6 @@ class I3BarInput(object):
 
     def wait(self, timeout):
         self._condition.wait(timeout)
-        rv = self.event if self.has_event else None
-        log.debug("received input event: {}".format(rv))
-        self.has_event = False
-        return rv
 
     def _wait(self):
         while not self.has_event: