netcat-openbsd: fix netcat_do_patch problem

${S}/debian should not be deleted after pop the patch,
or we will met error when run below push patch command
since no debian folder found.

QUILT_PATCHES=${S}/debian/patches quilt push -a

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-support/netcat/netcat-openbsd_1.190.bb

@@ -30,7 +30,7 @@ netcat_do_patch() {
             rm -rf ${S}/.pc
             mv ${S}/.pc-netcat ${S}/.pc
             QUILT_PATCHES=${S}/debian/patches quilt pop -a
-            rm -rf ${S}/.pc ${S}/debian
+            rm -rf ${S}/.pc
     fi
     QUILT_PATCHES=${S}/debian/patches quilt push -a
     mv ${S}/.pc ${S}/.pc-netcat