fix(carousel): remove transition buffering

- Remove transition buffering

Closes #6367
Fixes #5967

src/carousel/carousel.js

@@ -5,7 +5,7 @@ angular.module('ui.bootstrap.carousel', [])
     slides = self.slides = $scope.slides = [],
     SLIDE_DIRECTION = 'uib-slideDirection',
     currentIndex = $scope.active,
-    currentInterval, isPlaying, bufferedTransitions = [];
+    currentInterval, isPlaying;
 
   var destroyed = false;
   $element.addClass('carousel');
@@ -67,11 +67,6 @@ angular.module('ui.bootstrap.carousel', [])
   self.removeSlide = function(slide) {
     var index = findSlideIndex(slide);
 
-    var bufferedIndex = bufferedTransitions.indexOf(slides[index]);
-    if (bufferedIndex !== -1) {
-      bufferedTransitions.splice(bufferedIndex, 1);
-    }
-
     //get the index of the slide inside the carousel
     slides.splice(index, 1);
     if (slides.length > 0 && currentIndex === index) {
@@ -95,7 +90,6 @@ angular.module('ui.bootstrap.carousel', [])
     if (slides.length === 0) {
       currentIndex = null;
       $scope.active = null;
-      clearBufferedTransitions();
     }
   };
 
@@ -110,8 +104,6 @@ angular.module('ui.bootstrap.carousel', [])
     if (nextSlide.slide.index !== currentIndex &&
       !$scope.$currentTransition) {
       goNext(nextSlide.slide, nextIndex, direction);
-    } else if (nextSlide && nextSlide.slide.index !== currentIndex && $scope.$currentTransition) {
-      bufferedTransitions.push(slides[nextIndex]);
     }
   };
 
@@ -180,12 +172,6 @@ angular.module('ui.bootstrap.carousel', [])
     }
   });
 
-  function clearBufferedTransitions() {
-    while (bufferedTransitions.length) {
-      bufferedTransitions.shift();
-    }
-  }
-
   function getSlideByIndex(index) {
     for (var i = 0, l = slides.length; i < l; ++i) {
       if (slides[i].index === index) {
@@ -221,14 +207,6 @@ angular.module('ui.bootstrap.carousel', [])
         if (phase === 'close') {
           $scope.$currentTransition = null;
           $animate.off('addClass', element);
-          if (bufferedTransitions.length) {
-            var nextSlide = bufferedTransitions.pop().slide;
-            var nextIndex = nextSlide.index;
-            var nextDirection = nextIndex > self.getCurrentIndex() ? 'next' : 'prev';
-            clearBufferedTransitions();
-
-            goNext(nextSlide, nextIndex, nextDirection);
-          }
         }
       });
     }
@@ -259,7 +237,6 @@ angular.module('ui.bootstrap.carousel', [])
   function resetTransition(slides) {
     if (!slides.length) {
       $scope.$currentTransition = null;
-      clearBufferedTransitions();
     }
   }