Don't allow --style and --template for hg update and hg merge.

The only way that changesets will be shown with these command is in an error
message when trying to update to an ambiguous branch name.

mercurial/commands.py

@@ -2991,12 +2991,10 b' table = {'
          _('hg log [OPTION]... [FILE]')),
     "manifest": (manifest, [], _('hg manifest [REV]')),
     "merge":
-    (merge,
-     [('b', 'branch', '', _('merge with head of a specific branch')),
-      ('', 'style', '', _('display using template map file')),
-      ('f', 'force', None, _('force a merge with outstanding changes')),
-      ('', 'template', '', _('display with template'))],
-     _('hg merge [-b TAG] [-f] [REV]')),
+        (merge,
+         [('b', 'branch', '', _('merge with head of a specific branch')),
+          ('f', 'force', None, _('force a merge with outstanding changes'))],
+         _('hg merge [-b TAG] [-f] [REV]')),
     "outgoing|out": (outgoing,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
@@ -3122,11 +3120,9 b' table = {'
     "^update|up|checkout|co":
         (update,
          [('b', 'branch', '', _('checkout the head of a specific branch')),
-          ('', 'style', '', _('display using template map file')),
           ('m', 'merge', None, _('allow merging of branches')),
           ('C', 'clean', None, _('overwrite locally modified files')),
-          ('f', 'force', None, _('force a merge with outstanding changes')),
-          ('', 'template', '', _('display with template'))],
+          ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg update [-b TAG] [-m] [-C] [-f] [REV]')),
     "verify": (verify, [], _('hg verify')),
     "version": (show_version, [], _('hg version')),