[epiphany] Don't manually set changelog generation flags

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 672b86550fedc0abc7fb365f8b941e6f0150f546
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sat Dec 17 09:16:35 2016 -0600

    Don't manually set changelog generation flags
    
    No longer needed:
    
    https://git.gnome.org/browse/m4-common/commit/?id=51cfce5b891246ab4b06c66cde6f43acbeea1ef8

 Makefile.am |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 8df1220..61eba5c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -18,7 +18,6 @@ distuninstallcheck_listfiles = find . -type f -print | grep -v 'icon-theme.cache
 
 @GENERATE_CHANGELOG_RULES@
 CHANGELOG_START = $(EPIPHANY_CHANGELOG_START)
-CHANGELOG_GIT_FLAGS = --stat --no-color --no-decorate
 dist-hook: dist-ChangeLog
 
 MAINTAINERCLEANFILES = \