phosphor: net-snmp: drop FILESEXTRAPATH

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

(From meta-phosphor rev: e4a2b2d6d3f764d447faa4c8ef00cd37afe3ed5c)

Change-Id: Iadb613255c3e43c64e6bcaa82ba4cf86f9c67c48
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-connectivity/net-snmp/net-snmp_%.bbappend b/meta-phosphor/recipes-connectivity/net-snmp/net-snmp_%.bbappend
index 8937b5a..d137d29 100644
--- a/meta-phosphor/recipes-connectivity/net-snmp/net-snmp_%.bbappend
+++ b/meta-phosphor/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 \