glibc: Drop glibc bbappend

USE_LDCONFIG has been deprecated in favor of the ldconfig distro
variable, which we already don't use.  Drop bbappend.

Change-Id: I343427c1c8fa012e4847c0cd340859506d3a2e54
Tested: Built a witherspoon image
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/common/recipes-core/glibc/glibc_%.bbappend b/meta-phosphor/common/recipes-core/glibc/glibc_%.bbappend
deleted file mode 100644
index c821682..0000000
--- a/meta-phosphor/common/recipes-core/glibc/glibc_%.bbappend
+++ /dev/null
@@ -1,2 +0,0 @@
-#Remove /sbin/ldconfig and /etc/ld.so.conf
-USE_LDCONFIG = "0"