New config option - disable height hint cache queries

typo broke test


leftover junk


Fix to comply with linter 

and also, D'oh conditional

lnwallet/interface_test.go

@@ -2964,7 +2964,10 @@ func TestLightningWallet(t *testing.T) {
 	if err != nil {
 		t.Fatalf("unable to create db: %v", err)
 	}
-	hintCache, err := chainntnfs.NewHeightHintCache(db)
+	testCfg := chainntnfs.Config{
+		HeightHintCacheQueryDisable: false,
+	}
+	hintCache, err := chainntnfs.NewHeightHintCache(testCfg, db)
 	if err != nil {
 		t.Fatalf("unable to create height hint cache: %v", err)
 	}