minor dead code: unused format string

Using URL base64 encoding
(without padding, i.e. with trailing '=' or '==')
hash string width is 256/6 = 43 characters.

file size virtually unchanged,
  out/soong/build.ninja:  7,188,669,041 => 7,186,999,370 ie 1.6M

Bug: N/A
Test: manually verified (e.g. ran `m nothing` successfully)
Change-Id: I166d613e1fd857555da9611d420d6691806571c7
diff --git a/bazel/aquery_test.go b/bazel/aquery_test.go
index 740a1f1..c9c8909 100644
--- a/bazel/aquery_test.go
+++ b/bazel/aquery_test.go
@@ -847,8 +847,8 @@
 	}
 
 	expectedDepsetFiles := [][]string{
-		[]string{"middleinput_one", "middleinput_two"},
-		[]string{"middleinput_one", "middleinput_two", "maininput_one", "maininput_two"},
+		{"middleinput_one", "middleinput_two", "maininput_one", "maininput_two"},
+		{"middleinput_one", "middleinput_two"},
 	}
 	assertFlattenedDepsets(t, actualDepsets, expectedDepsetFiles)
 
@@ -897,7 +897,7 @@
 func assertFlattenedDepsets(t *testing.T, actualDepsets []AqueryDepset, expectedDepsetFiles [][]string) {
 	t.Helper()
 	if len(actualDepsets) != len(expectedDepsetFiles) {
-		t.Errorf("Expected %d depsets, but got %d depsets", expectedDepsetFiles, actualDepsets)
+		t.Errorf("Expected %s depsets, but got %s depsets", expectedDepsetFiles, actualDepsets)
 	}
 	for i, actualDepset := range actualDepsets {
 		actualFlattenedInputs := flattenDepsets([]string{actualDepset.ContentHash}, actualDepsets)