[five-or-more] Remove Polish help translation

[Piotr Drąg <piotrdrag src gnome org>]

commit 10aa884213a39e383f7ec8e047b903d2722f8f95
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Mar 15 23:09:30 2015 +0100

    Remove Polish help translation
    
    16% translated is not worth keeping.

 help/Makefile.am |    2 +-
 help/pl/pl.po    |  688 ------------------------------------------------------
 2 files changed, 1 insertions(+), 689 deletions(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 7bba289..a83b957 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -33,6 +33,6 @@ HELP_FILES = \
        strategy.page                   \
        translate.page
 
-HELP_LINGUAS = ca cs de el en_GB es eu fr gl hu it oc pl pt_BR ru sl sr sr latin sv tr zh_CN
+HELP_LINGUAS = ca cs de el en_GB es eu fr gl hu it oc pt_BR ru sl sr sr latin sv tr zh_CN
 
 -include $(top_srcdir)/git.mk