pylintrc: disable score reports

Newer pylint versions are spammy in this regard.

Bug: 28298984
Test: pylint no longer includes "score" summaries
Change-Id: Ide716c09ad941ad49c8dcc1becad457ed217f073
diff --git a/tools/pylintrc b/tools/pylintrc
index f1ea6b2..517b6d0 100644
--- a/tools/pylintrc
+++ b/tools/pylintrc
@@ -179,6 +179,9 @@
 # Tells whether to display a full report or only the messages
 reports=no
 
+# Activate the evaluation score.
+score=no
+
 # Python expression which should return a note less than 10 (10 is the highest
 # note). You have access to the variables errors warning, statement which
 # respectively contain the number of errors / warnings messages and the total