Revert: Small optimization in genre mapping

scanner/mapping_test.go

@@ -67,5 +67,10 @@ var _ = Describe("mapping", func() {
 			Expect(gs[1].Name).To(Equal("Dance"))
 			Expect(gs[2].Name).To(Equal("Electronic"))
 		})
+		It("does not break on spaces", func() {
+			_, gs := mapper.mapGenres([]string{"New Wave"})
+			Expect(gs).To(HaveLen(1))
+			Expect(gs[0].Name).To(Equal("New Wave"))
+		})
 	})
 })