feat(alert): remove deprecated code

BREAKING CHANGE: Remove deprecated non-prefixed directives

Closes #4714

Author: Foxandxss

src/alert/alert.js

@@ -28,41 +28,3 @@ angular.module('ui.bootstrap.alert', [])
     }
   };
 });
-
-/* Deprecated alert below */
-
-angular.module('ui.bootstrap.alert')
-
-  .value('$alertSuppressWarning', false)
-
-  .controller('AlertController', ['$scope', '$attrs', '$controller', '$log', '$alertSuppressWarning', function($scope, $attrs, $controller, $log, $alertSuppressWarning) {
-    if (!$alertSuppressWarning) {
-      $log.warn('AlertController is now deprecated. Use UibAlertController instead.');
-    }
-
-    angular.extend(this, $controller('UibAlertController', {
-      $scope: $scope,
-      $attrs: $attrs
-    }));
-  }])
-
-  .directive('alert', ['$log', '$alertSuppressWarning', function($log, $alertSuppressWarning) {
-    return {
-      controller: 'AlertController',
-      controllerAs: 'alert',
-      templateUrl: function(element, attrs) {
-        return attrs.templateUrl || 'template/alert/alert.html';
-      },
-      transclude: true,
-      replace: true,
-      scope: {
-        type: '@',
-        close: '&'
-      },
-      link: function() {
-        if (!$alertSuppressWarning) {
-          $log.warn('alert is now deprecated. Use uib-alert instead.');
-        }
-      }
-    };
-  }]);

src/alert/test/alert.spec.js

@@ -150,37 +150,3 @@ describe('uib-alert', function() {
     expect(scope.removeAlert).toHaveBeenCalled();
   });
 });
-
-/* Deprecation tests below */
-
-describe('alert deprecation', function() {
-  beforeEach(module('ui.bootstrap.alert'));
-  beforeEach(module('template/alert/alert.html'));
-
-  it('should suppress warning', function() {
-    module(function($provide) {
-      $provide.value('$alertSuppressWarning', true);
-    });
-
-    inject(function($compile, $log, $rootScope) {
-      spyOn($log, 'warn');
-
-      var element = '<alert></alert>';
-      element = $compile(element)($rootScope);
-      $rootScope.$digest();
-      expect($log.warn.calls.count()).toBe(0);
-    });
-  });
-
-  it('should give warning by default', inject(function($compile, $log, $rootScope) {
-    spyOn($log, 'warn');
-
-    var element = '<alert></alert>';
-    element = $compile(element)($rootScope);
-    $rootScope.$digest();
-
-    expect($log.warn.calls.count()).toBe(2);
-    expect($log.warn.calls.argsFor(0)).toEqual(['AlertController is now deprecated. Use UibAlertController instead.']);
-    expect($log.warn.calls.argsFor(1)).toEqual(['alert is now deprecated. Use uib-alert instead.']);
-  }));
-});