Update .gitignore.

.gitignore

@@ -1,6 +1,9 @@
+testdata/bench
+
+# These explicitly listed benchmark data files are for an obsolete version of
+# snappy_test.go.
 testdata/alice29.txt
 testdata/asyoulik.txt
-testdata/bench
 testdata/fireworks.jpeg
 testdata/geo.protodata
 testdata/html

snappy_test.go

@@ -707,9 +707,6 @@ func BenchmarkRandomEncode(b *testing.B) {
 // testFiles' values are copied directly from
 // https://raw.githubusercontent.com/google/snappy/master/snappy_unittest.cc
 // The label field is unused in snappy-go.
-//
-// If this list changes (due to the upstream C++ list changing), remember to
-// update the .gitignore file in this repository.
 var testFiles = []struct {
 	label     string
 	filename  string