Bug 1572394 - Remove MOZ_LDAP_XPCOM ifdef from config/recurse.mk. r=glandium

Fixes Thunderbird build bustage related to target-shared.

Investigation into the build issue revealed that this hack is no longer necessary and can be removed. And it's always nice to remove Thunderbird specific code from the build system.

Differential Revision: https://phabricator.services.mozilla.com/D41307

--HG--
extra : moz-landing-system : lando

config/recurse.mk

@@ -196,10 +196,6 @@ endif
 ifeq ($(MOZ_WIDGET_TOOLKIT),gtk3)
 toolkit/library/target-shared: widget/gtk/mozgtk/gtk3/target-shared
 endif
-ifdef MOZ_LDAP_XPCOM
-ldap/target: security/target-shared mozglue/build/target-shared
-toolkit/library/target-shared: ldap/target
-endif
 endif
 # Most things are built during compile (target/host), but some things happen during export
 # Those need to depend on config/export for system wrappers.