File no-gtk2.patch of Package mate-applet-softupd

diff -Nur mate-applet-softupd-0.4.8/configure.ac new/configure.ac
--- mate-applet-softupd-0.4.8/configure.ac	2019-03-18 22:09:12.000000000 +0100
+++ new/configure.ac	2021-06-01 02:18:16.446809987 +0200
@@ -74,7 +74,6 @@
 USE_GTK="0"
 AC_ARG_ENABLE([gtk],[AS_HELP_STRING([--enable-gtk],[compile only for the specified GTK version, 2 or 3 (default: check both, use GTK-3, if not found, use GTK-2))])],[FORCE_GTK=$enableval])
 
-PKG_CHECK_MODULES([PKG_GTK2], [gtk+-2.0], [FOUND_GTK2="1"], [FOUND_GTK2="0"])
 PKG_CHECK_MODULES([PKG_GTK3], [gtk+-3.0], [FOUND_GTK3="1"], [FOUND_GTK3="0"])
 
 if test $FORCE_GTK = "3" ; then
@@ -83,12 +82,6 @@
 	else
 		AC_MSG_ERROR(["*** GTK3 forced, but not found."])
 	fi
-elif test $FORCE_GTK = "2" ; then
-	if test $FOUND_GTK2 = "1" ; then
-		AM_PATH_GTK_2_0([2.24.0], [USE_GTK="2"], [AC_MSG_ERROR(["*** GTK2 forced, but not found."])])
-	else
-		AC_MSG_ERROR(["*** GTK2 forced, but not found."])
-	fi
 else
 	# Try to match the GTK version used by mate-panel.
 	PANEL_GTK=`$PKG_CONFIG --print-requires "$LIBMATEPANELAPPLET" 2>/dev/null |
@@ -96,17 +89,12 @@
 	case "$PANEL_GTK" in
 	gtk+-3*)
 		AM_PATH_GTK_3_0([3.14.0], [USE_GTK="3"], [AC_MSG_ERROR(["*** GTK3 used by mate-panel, but no suitable version found."])]);;
-	gtk+-2*)
-		AM_PATH_GTK_2_0([2.24.0], [USE_GTK="2"], [AC_MSG_ERROR(["*** GTK2 used by mate-panel, but no suitable version found."])]);;
 	esac
 
 	# Only accept GTK3 if at least 3.14; else resort to GTK2
 	if test $FOUND_GTK3 = "1" -a $USE_GTK = "0"; then
 		AM_PATH_GTK_3_0([3.14.0], [USE_GTK="3"], [USE_GTK="0"])
 	fi
-	if test $FOUND_GTK2 = "1" -a $USE_GTK = "0" ; then
-		AM_PATH_GTK_2_0([2.24.0], [USE_GTK="2"], [USE_GTK="0"])
-	fi
 fi
 
 if test $USE_GTK = "3" ; then