setup: cleanup old left-over code

setup.py

@@ -208,20 +208,12 b' ext_modules=['
     Extension('mercurial.diffhelpers', ['mercurial/diffhelpers.c']),
     Extension('mercurial.mpatch', ['mercurial/mpatch.c']),
     Extension('mercurial.parsers', ['mercurial/parsers.c']),
+    Extension('mercurial.osutil', ['mercurial/osutil.c']),
     ]
 
 packages = ['mercurial', 'mercurial.hgweb', 'hgext', 'hgext.convert',
             'hgext.highlight', 'hgext.zeroconf', ]
 
-try:
-    import msvcrt
-    ext_modules.append(Extension('mercurial.osutil', ['mercurial/osutil.c']))
-except ImportError:
-    pass
-
-try:
-    ext_modules.append(Extension('mercurial.osutil', ['mercurial/osutil.c']))
-
     if sys.platform == 'linux2' and os.uname()[2] > '2.6':
         # The inotify extension is only usable with Linux 2.6 kernels.
         # You also need a reasonably recent C library.
@@ -230,8 +222,6 b' try:'
             ext_modules.append(Extension('hgext.inotify.linux._inotify',
                                          ['hgext/inotify/linux/_inotify.c']))
             packages.extend(['hgext.inotify', 'hgext.inotify.linux'])
-except ImportError:
-    pass
 
 datafiles = []
 for root in ('templates', 'i18n'):