SHELLCHECK_WARNING, VERBOSE is unused

gengal.sh was originally based on unopkg.sh
which had this --verbose switch...

commit 164027e4
Date:   Fri Apr 5 16:39:24 2013 +0100

    gengal: re-base on original tool.

    new wrapper based on unopkg.sh.
    work re-based on original SUSE implementation.

and unopkg.sh later had VERBOSE removed...

commit 1fc195f7
Author: Stephan Bergmann <sbergman@redhat.com>
Date:   Thu Oct 17 15:34:53 2013 +0200

    Simplify code (VERBOSE was unused)

but gengal.sh retained its unused VERBOSE variable

Change-Id: I56aa830aef829c7727550fcaf7aed5058fffdc78
Reviewed-on: https://gerrit.libreoffice.org/58308
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svx/source/gengal/gengal.sh

@@ -59,8 +59,6 @@ for arg in "$@"
 do
   case "$arg" in
        -env:*) BOOTSTRAPVARS=$BOOTSTRAPVARS" ""$arg";;
-       -v) VERBOSE=true;;
-       --verbose) VERBOSE=true;;
   esac
 done