style: hidden scrollbar by default (#3085)

Author: eiinu

src/packages/__VUE/elevator/index.scss

@@ -22,6 +22,10 @@
     display: block;
     position: relative;
     overflow: auto;
+    &::-webkit-scrollbar {
+      display: none;
+      width: 0;
+    }
     &__item {
       display: block;
       font-size: $elevator-list-item-font-size;

src/packages/__VUE/list/index.scss

@@ -4,6 +4,10 @@
   overflow-x: hidden;
   overflow-y: auto;
   -webkit-overflow-scrolling: touch;
+  &::-webkit-scrollbar {
+    display: none;
+    width: 0;
+  }
 
   &-phantom {
     position: relative;

src/packages/__VUE/menuitem/index.scss

@@ -29,6 +29,10 @@
   flex-wrap: wrap;
   &.nut-menu-item__overflow {
     overflow-y: auto;
+    &::-webkit-scrollbar {
+      display: none;
+      width: 0;
+    }
   }
 
   .nut-menu-item__option {