lnwire/feature: remove feature bit number from name

The number and the name will be separate on the rpc level, so we remove
the feature bit from the string. Currently this method is unused apart
from maybe in some rare logging instances.

lnwire/features_test.go

@@ -205,42 +205,42 @@ func TestFeatureNames(t *testing.T) {
 	}{
 		{
 			bit:           0,
-			expectedName:  "feature1(0)",
+			expectedName:  "feature1",
 			expectedKnown: true,
 		},
 		{
 			bit:           1,
-			expectedName:  "unknown(1)",
+			expectedName:  "unknown",
 			expectedKnown: false,
 		},
 		{
 			bit:           2,
-			expectedName:  "unknown(2)",
+			expectedName:  "unknown",
 			expectedKnown: false,
 		},
 		{
 			bit:           3,
-			expectedName:  "feature2(3)",
+			expectedName:  "feature2",
 			expectedKnown: true,
 		},
 		{
 			bit:           4,
-			expectedName:  "feature3(4)",
+			expectedName:  "feature3",
 			expectedKnown: true,
 		},
 		{
 			bit:           5,
-			expectedName:  "feature3(5)",
+			expectedName:  "feature3",
 			expectedKnown: true,
 		},
 		{
 			bit:           6,
-			expectedName:  "unknown(6)",
+			expectedName:  "unknown",
 			expectedKnown: false,
 		},
 		{
 			bit:           7,
-			expectedName:  "unknown(7)",
+			expectedName:  "unknown",
 			expectedKnown: false,
 		},
 	}