phosphor: net-snmp: drop FILESEXTRAPATH

The net-snmp bbappend does not have any files, so setting FILESEXTRAPATH
is not necessary.

Change-Id: Idca0b9b2e4f6dd879c5d35553bc9a3ef60091991
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/recipes-connectivity/net-snmp/net-snmp_%.bbappend b/recipes-connectivity/net-snmp/net-snmp_%.bbappend
index 8937b5a..d137d29 100644
--- a/recipes-connectivity/net-snmp/net-snmp_%.bbappend
+++ b/recipes-connectivity/net-snmp/net-snmp_%.bbappend
@@ -1,5 +1,3 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
-
 EXTRA_OECONF += "--disable-mib-loading \
 --disable-manuals --disable-scripts --disable-embedded-perl \
 --disable-perl-cc-checks --disable-libtool-lock --disable-debugging \