fix: fix radio style

Author: Tidyzq

src/components/checkbox/checkbox.less

@@ -9,12 +9,6 @@
   color: transparent;
 }
 
-.weui-check[checked]+.weui-icon-checked {
-  color: var(--weui-BRAND);
-  -webkit-mask-image: url(data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20d%3D%22M8.657%2018.435L3%2012.778l1.414-1.414%204.95%204.95L20.678%205l1.414%201.414-12.02%2012.021a1%201%200%2001-1.415%200z%22%20fill-rule%3D%22evenodd%22%2F%3E%3C%2Fsvg%3E);
-  mask-image: url(data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20d%3D%22M8.657%2018.435L3%2012.778l1.414-1.414%204.95%204.95L20.678%205l1.414%201.414-12.02%2012.021a1%201%200%2001-1.415%200z%22%20fill-rule%3D%22evenodd%22%2F%3E%3C%2Fsvg%3E);
-}
-
 .weui-cell_radio .weui-check + .weui-icon-checked {
   &.weui-icon-is-checked {
     /* skyline 不支持 attribute selector */