update duration less var

style/core/iconfont.less

@@ -150,7 +150,7 @@
 .@{iconfont-css-prefix}-windows:before                {content:"\e66c";}
 .@{iconfont-css-prefix}-loading:before {
   display: inline-block;
-  .animation(loadingCircle @duration-1000 infinite linear);
+  .animation(loadingCircle 1s infinite linear);
   content:"\e610";
 }
 

style/core/motion.less

@@ -1,5 +1,5 @@
 .motion-common() {
-  animation-duration: .24s;
+  animation-duration: .22s;
   animation-fill-mode: both;
   display: block !important;
 }

style/mixins/button.less

@@ -203,7 +203,7 @@
     border-radius: 50% 50%;
     content: " ";
     .scale(0, 0);
-    .transition(all @duration-300 @ease-in-out);
+    .transition(all .3s @ease-in-out);
     z-index: 0;
     background-color: @primary-color;
   }

style/themes/default/custom.less

@@ -26,16 +26,6 @@
 @cursor-disabled        : not-allowed;
 
 // Animation
-@duration-300        : .3s;
-@duration-400        : .4s;
-@duration-500        : .5s;
-@duration-600        : .6s;
-@duration-700        : .7s;
-@duration-800        : .8s;
-@duration-900        : .9s;
-@duration-1000       : 1.0s;
-@duration-1100       : 1.1s;
-@duration-1200       : 1.2s;
 @ease-out            : cubic-bezier(0.215, 0.61, 0.355, 1);
 @ease-in             : cubic-bezier(0.55, 0.055, 0.675, 0.19);
 @ease-in-out         : cubic-bezier(0.645, 0.045, 0.355, 1);