Build: remove bower.json lint target

(Cherry-picked from 285cfbfccc4c61d50ee8e0fe6e23695dc663e166)
Ref 26eca143c2dd857b9e3d1c446a467fed16e903d2

Gruntfile.js

@@ -70,10 +70,6 @@ module.exports = function( grunt ) {
 		jsonlint: {
 			pkg: {
 				src: [ "package.json" ]
-			},
-
-			bower: {
-				src: [ "bower.json" ]
 			}
 		},
 		jshint: {