Removing unused SetPassword D-Bus API method

Password update is done through pam_chauthtok() API,
and don't use SetPassword. Removing the unused code.

Tested-by:
N/A.

Change-Id: I42a5b7c73bc2cb2404801df1c1cd057a94a1a924
Signed-off-by: Sumanth Bhat <sumanth.bhat@intel.com>
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>
diff --git a/Makefile.am b/Makefile.am
index 9da26ef..b138aea 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,9 +1,8 @@
 sbin_PROGRAMS = phosphor-user-manager
 
-noinst_HEADERS = user.hpp user_mgr.hpp users.hpp
+noinst_HEADERS = user_mgr.hpp users.hpp
 
 phosphor_user_manager_SOURCES = \
-                user.cpp \
                 mainapp.cpp \
                 user_mgr.cpp \
                 users.cpp