purge-locales: skip /usr/man and /usr/share/man

These directories are going to be removed anyway, so no point purging
their locales.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/Makefile b/Makefile
index 546bcd3..02a1032 100644
--- a/Makefile
+++ b/Makefile
@@ -544,7 +544,7 @@
 	rm -f $(LOCALE_WHITELIST)
 	for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 
-	for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/man /usr/share/man /usr/lib/locale)); \
+	for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 	do \
 		for lang in $$(cd $$dir; ls .|grep -v man); \
 		do \