macdeploy: remove unused detached-sig-apply

Signature application is now done with signapple.

Makefile.am

@@ -64,7 +64,6 @@ WINDOWS_PACKAGING = $(top_srcdir)/share/pixmaps/bitcoin.ico \
   $(top_srcdir)/doc/README_windows.txt
 
 OSX_PACKAGING = $(OSX_DEPLOY_SCRIPT) $(OSX_INSTALLER_ICONS) \
-  $(top_srcdir)/contrib/macdeploy/detached-sig-apply.sh \
   $(top_srcdir)/contrib/macdeploy/detached-sig-create.sh
 
 COVERAGE_INFO = $(COV_TOOL_WRAPPER) baseline.info \