Fix TypeScript 1.8 compile errors. Get rid of "ui" imports.

ui/animation/animation.android.ts

@@ -264,7 +264,6 @@ export class Animation extends common.Animation implements definition.Animation
 
             default:
                 throw new Error("Cannot animate " + propertyAnimation.property);
-                break;
         }
 
         var i = 0;

ui/editable-text-base/editable-text-base.android.ts

@@ -57,7 +57,6 @@ export class EditableTextBase extends common.EditableTextBase {
                         break;
                     default:
                         throw new Error("Invalid updateTextTrigger: " + owner.updateTextTrigger);
-                        break;
                 }
             }
         });

ui/styling/css-selector.ts

@@ -228,7 +228,6 @@ class CssCompositeSelector extends CssSelector {
             }
             if (!result) {
                 break;
-                return result;
             }
         }
         return result;
@@ -282,11 +281,9 @@ function matchesAttr(attrExpression: string, view: view.View): boolean {
                 break;
         }
         return !types.isNullOrUndefined(view[attrName]) && attrCheckRegex.test(view[attrName]+"");
-    }
-    else {
+    } else {
         return !types.isNullOrUndefined(view[attrExpression]);
     }
-    return false;
 }
 
 export class CssVisualStateSelector extends CssSelector {