proftpd: remove macro-prefix-map from prxs

macro-prefix-map points to build WORKDIR which will
cause reproducibilty failures.

Signed-off-by: Jeremy A. Puhlman <jpuhlman@mvista.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-daemons/proftpd/proftpd_1.3.6.bb

@@ -110,6 +110,7 @@ do_install () {
     sed -e 's|--sysroot=${STAGING_DIR_HOST}||g' \
         -e 's|${STAGING_DIR_NATIVE}||g' \
         -e 's|-fdebug-prefix-map=[^ ]*||g' \
+        -e 's|-fmacro-prefix-map=[^ ]*||g' \
         -i ${D}/${bindir}/prxs
 
     # ftpmail perl script, which reads the proftpd log file and sends