Align mar generation on Windows with other platforms

This makes mar generation dependent on packaging not installer

toolkit/mozapps/installer/packager-uxp.mk

@@ -15,13 +15,10 @@ ifeq (,$(filter SunOS Linux WINNT,$(OS_ARCH)))
 else
 	$(MAKE) stage-package make-buildinfo-file
 	@echo 'Compressing...'
+	cd $(DIST)/$(MOZ_PKG_DIR); $(CREATE_PRECOMPLETE_CMD)
 ifeq (WINNT,$(OS_ARCH))
 	cd $(DIST); $(CYGWIN_WRAPPER) 7z a -t7z -m0=lzma2 -mx=9 -aoa -bb3 $(PKG_BASENAME).7z $(MOZ_PKG_DIR)
 else
-	# Other platforms such as Linux need the Package routine to spawn a pre-complete file
-  # Windows does not require this because it is dependent on generating the NSIS
-  # Installer which has its own call to generate the precomplete file
-	cd $(DIST)/$(MOZ_PKG_DIR); $(CREATE_PRECOMPLETE_CMD)
 	cd $(DIST); XZ_OPT=-9e $(TAR) cfJv $(PKG_BASENAME).tar.xz $(MOZ_PKG_DIR)
 endif
 endif

tools/update-packaging/Makefile.in

@@ -34,8 +34,6 @@ OVERRIDE_DEFAULT_GOAL := full-update
 full-update:: complete-patch
 
 ifeq ($(OS_TARGET), WINNT)
-MOZ_PKG_FORMAT	:= SFX7Z
-UNPACKAGE	= '$(subst $(DIST),$(ABS_DIST),$(INSTALLER_PACKAGE))'
 ifdef AB_CD
 UNPACKAGE	= '$(PACKAGE_BASE_DIR)/$(PACKAGE)'
 endif
@@ -54,11 +52,6 @@ endif
 dir-stage := $(call mkdir_deps,$(STAGE_DIR))
 
 complete-patch:: $(dir-stage)
-ifeq ($(OS_TARGET), WINNT)
-	test -f $(UNPACKAGE)
-	$(RM) -rf '$(PACKAGE_DIR)'
-	cd $(PACKAGE_BASE_DIR) && $(INNER_UNMAKE_PACKAGE)
-endif
 	MAR=$(MAR_BIN) \
 	  $(srcdir)/make_full_update.sh \
 	  '$(DIST)/$(COMPLETE_MAR)' \