remove obsolete phosphor-ldap-mapper

`phosphor-ldap-config` now provides the full functionality of the role
mapper. `phosphor-ldap-mapper` is obsolete and makes confused.

This commit completely removes `phosphor-ldap-mapper`.

Change-Id: I3b62b06395861daa743530ad856fa1fa80b1d427
Signed-off-by: Alexander Filippov <a.filippov@yadro.com>
diff --git a/Makefile.am b/Makefile.am
index 1dbd594..7e6df6f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -28,7 +28,7 @@
 SYSTEM_UNIT_ALIASES = \
 	../phosphor-certificate-manager@.service multi-user.target.wants/phosphor-certificate-manager@nslcd.service
 
-SUBDIRS = . phosphor-ldap-mapper phosphor-ldap-config test
+SUBDIRS = . phosphor-ldap-config test
 
 install-aliases-hook:
 	set -- $(SYSTEM_UNIT_ALIASES) && \