Removed the section from the binary signing-party package which is already

Removed the section from the binary signing-party package which is already
defined for the source package.

Thus lintian does not shout anymore about it.

Here is the output given by lintian before:

 binary-control-field-duplicates-source field "section"

 In debian/control, this field for a binary package duplicates the value
 inherited from the source package paragraph. This doesn't hurt anything,
 but you may want to take advantage of the inheritance and set the value
 in only one place. It prevents missing duplicate places that need to be
 fixed if the value ever changes.

git-svn-id: svn://svn.debian.org/pgp-tools/trunk@407 b513b33f-fedd-0310-b452-c3deb5f4c849