Remove old dumb coefficients for commits stats - unneeded with new charts api.

diff --git a/pygit/pygit.py b/pygit/pygit.py
index 3a35958..f1d63a4 100644
--- a/pygit/pygit.py
+++ b/pygit/pygit.py
@@ -133,7 +133,7 @@ def stats_sum(lst):
   r = {'lines': 0, 'files': 0}
   for cm in lst:
     try:
-      r['lines'] += float(cm.stats.total['lines'])/5
+      r['lines'] += cm.stats.total['lines']
       r['files'] += cm.stats.total['files']
     except ValueError:
       pass
@@ -144,7 +144,7 @@ def commits_stats(rid,branch='master'):
   d = r.commits(branch,max_count=200)
   grp = group_by_date(d)
   dates = [g[0] for g in grp]
-  n_commits = [len(g[1])*2 for g in grp]
+  n_commits = [len(g[1]) for g in grp]
   stats = [stats_sum(g[1]) for g in grp]
   files = [s['files'] for s in stats]
   lines = [s['lines'] for s in stats]