- remove /usr/bin/http2 symlink only during apache2 package

uninstall, not upgrade [bsc#1041830]

OBS-URL: https://build.opensuse.org/package/show/Apache/apache2?expand=0&rev=515

apache2.spec

@@ -1374,11 +1374,14 @@ exit 0
 %if 0%{?suse_version} >= 1210
 %service_del_preun apache2.target
 %endif
-for i in %{_sbindir}/httpd \
-	 %{installbuilddir}/config_vars.mk
-do
-	test -L $i && rm $i
-done
+# removing the symlink in case of uninstall (not upgrade) [bsc#1041830]
+if [ $1 -eq 0 ]; then
+  for i in %{_sbindir}/httpd \
+    %{installbuilddir}/config_vars.mk
+  do
+    test -L $i && rm $i
+  done
+fi
 exit 0
 
 %postun