no need to sign mysql-connector-ooo files, because they no longer exist in LO

Change-Id: Id9361cc6fd6d9bb150fd5a70fde7f6c91097b04a
Reviewed-on: https://gerrit.libreoffice.org/70018
Tested-by: Jenkins
Reviewed-by: Andras Timar <andras.timar@collabora.com>

postprocess/CustomTarget_signing.mk

@@ -47,7 +47,6 @@ ifneq ($(ENABLE_DBGUTIL),TRUE)
 			$(INSTDIR)/program/shlxthdl/*.dll \
 			$(INSTDIR)/sdk/cli/*.dll \
 			$(INSTDIR)/sdk/bin/*.exe \
-			$(INSTDIR)/share/extensions/mysql-connector-ooo/*.dll\
 	&& rm $$EXCLUDELIST && touch $@
 else
 	@echo "Doing nothing on non product builds ..."