dpkg(1): Remove reference to --nocheck dpkg-deb option

dpkg does not pass this option when running dpkg-deb.

debian/changelog

@@ -38,6 +38,8 @@ dpkg (1.16.1) UNRELEASED; urgency=low
     input archive sequentially. Closes: #616609
   * Remove long non-functional --new and --old dpkg-deb option handling
     from dpkg which were being treated as dpkg commands.
+  * Remove reference to --nocheck dpkg-deb option from dpkg man page as
+    the latter does not pass it to the former.
 
   [ Updated man page translations ]
   * German (Helge Kreutzmann).

man/dpkg.1

@@ -482,10 +482,6 @@ Install a package even if it fails authenticity check.
 Ignore dependency-checking for specified packages (actually, checking is
 performed, but only warnings about conflicts are given, nothing else).
 .TP
-.B \-\-nocheck
-Don't read or check contents of control file while building a package.
-This is a \fBdpkg\-deb\fP(1) option.
-.TP
 \fB\-\-no\-act\fP, \fB\-\-dry\-run\fP, \fB\-\-simulate\fP
 Do everything which is supposed to be done, but don't write any
 changes. This is used to see what would happen with the specified