ui: remove labeled argument from popbuffer

It was moved to pushbuffer and currently does nothing.

hgext/color.py

@@ -419,9 +419,9 b' def configstyles(ui):'
             _styles[status] = ' '.join(good)
 
 class colorui(uimod.ui):
-    def popbuffer(self, labeled=False):
+    def popbuffer(self):
         if self._colormode is None:
-            return super(colorui, self).popbuffer(labeled)
+            return super(colorui, self).popbuffer()
 
         self._bufferstates.pop()
         return ''.join(self._buffers.pop())

mercurial/cmdutil.py

@@ -1188,7 +1188,7 b' class changeset_printer(object):'
         if self.buffered:
             self.ui.pushbuffer(labeled=True)
             self._show(ctx, copies, matchfn, props)
-            self.hunk[ctx.rev()] = self.ui.popbuffer(labeled=True)
+            self.hunk[ctx.rev()] = self.ui.popbuffer()
         else:
             self._show(ctx, copies, matchfn, props)
 

mercurial/ui.py

@@ -594,16 +594,8 b' class ui(object):'
         self._bufferstates.append((error, subproc, labeled))
         self._bufferapplylabels = labeled
 
-    def popbuffer(self, labeled=False):
-        '''pop the last buffer and return the buffered output
-
-        If labeled is True, any labels associated with buffered
-        output will be handled. By default, this has no effect
-        on the output returned, but extensions and GUI tools may
-        handle this argument and returned styled output. If output
-        is being buffered so it can be captured and parsed or
-        processed, labeled should not be set to True.
-        '''
+    def popbuffer(self):
+        '''pop the last buffer and return the buffered output'''
         self._bufferstates.pop()
         if self._bufferstates:
             self._bufferapplylabels = self._bufferstates[-1][2]