Drop the deprecated QuickTime stuff when building a sandboxed LO

A sandboxed build is presumably intended for the Mac App Store and we
don't want to be using deprecated crap there.

Change-Id: I0b0098f7002643b1ed53a5caaee9ffee3c9fc970

avmedia/Module_avmedia.mk

@@ -37,11 +37,13 @@ endif
 
 ifeq ($(OS),MACOSX)
 ifneq ($(CPUNAME),X86_64)
+ifneq ($(ENABLE_MACOSX_SANDBOX),TRUE)
 $(eval $(call gb_Module_add_targets,avmedia,\
 	Library_avmediaQuickTime \
 ))
 endif
 endif
+endif
 
 ifneq ($(ENABLE_DIRECTX),)
 $(eval $(call gb_Module_add_targets,avmedia,\