[gnome-control-center] build: Remove PKG_NAME from autogen.sh

[Christophe Fergeau <teuf src gnome org>]

commit 2a76314b1823cbec00acc06ca2823f251e0c5d8f
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Sat Oct 17 21:26:42 2015 +0200

    build: Remove PKG_NAME from autogen.sh
    
    This gets rid of this warning:
    ***Warning*** PKG_NAME is deprecated, you may remove it from autogen.sh
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756762

 autogen.sh |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 4179f77..268b3eb 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,14 +4,13 @@
 srcdir=`dirname $0`
 test -z "$srcdir" && srcdir=.
 
-PKG_NAME="control-center"
 ACLOCAL_FLAGS="-I libgd $ACLOCAL_FLAGS"
 
 (test -f $srcdir/configure.ac \
   && test -f $srcdir/autogen.sh \
   && test -d $srcdir/shell) || {
     echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"
-    echo " top-level $PKG_NAME directory"
+    echo " top-level gnome-control-center directory"
     exit 1
 }