meta-ibm: witherspoon: mboxd: drop symlink

Drop symlink and rename bbappend for mboxd.

Change-Id: I54bcc1e99cc38680ced24674d7c08a102db0a785
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend b/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
deleted file mode 120000
index 02277c4..0000000
--- a/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
+++ /dev/null
@@ -1 +0,0 @@
-mboxd.bbappend
\ No newline at end of file
diff --git a/meta-witherspoon/recipes-phosphor/mboxd/mboxd.bbappend b/meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend
similarity index 100%
rename from meta-witherspoon/recipes-phosphor/mboxd/mboxd.bbappend
rename to meta-witherspoon/recipes-phosphor/mboxd/mboxd_%.bbappend