refactor: 无用样式删除

Former-commit-id: 53c07c25b722c5c7d15753a6caf6b8e79d39802b

src/styles/element-plus.scss

@@ -6,36 +6,6 @@
   --el-text-color-disabled: #ccc;
 }
 
-/* 核心组件的变量，下面这些样式是必须要写的 */
-
-.el-link.el-link--primary:hover {
-  color: var(--el-color-primary-light-2) !important;
-}
-
-.el-tag {
-  --el-tag-bg-color: var(--el-color-primary-light-9);
-  --el-tag-border-color: var(--el-color-primary-light-8);
-  --el-tag-text-color: var(--el-color-primary);
-  --el-tag-hover-color: var(--el-color-primary);
-}
-
-.el-button--primary {
-  --el-button-text-color: var(--el-color-white) !important;
-  --el-button-bg-color: var(--el-color-primary) !important;
-  --el-button-border-color: var(--el-color-primary) !important;
-  --el-button-active-bg-color: var(--el-color-primary-dark) !important;
-  --el-button-active-border-color: var(--el-color-primary-dark) !important;
-}
-
-.el-button--primary.is-plain{
-    --el-button-text-color: var(--el-color-primary)!important;
-    --el-button-bg-color: var(--el-color-primary-light-9)!important;
-    --el-button-border-color: var(--el-color-primary-light-5)!important;
-    --el-button-hover-text-color: var(--el-color-white)!important;
-    --el-button-active-text-color: var(--el-color-white)!important;
-    --el-button-active-border-color: var(--el-color-primary)!important;
-}
-
 // 覆盖 element-plus 的样式
 .el-breadcrumb__inner,
 .el-breadcrumb__inner a {
@@ -52,18 +22,6 @@
   display: none;
 }
 
-
-// refine element ui upload
-.upload-container {
-  .el-upload {
-    width: 100%;
-    .el-upload-dragger {
-      width: 100%;
-      height: 200px;
-    }
-  }
-}
-
 // dropdown
 .el-dropdown-menu {
   a {

src/styles/element-variables.module.scss

@@ -1,29 +0,0 @@
-/**
-* I think element default theme color is too light for long-term use.
-* So I modified the default color and you can modify it to your liking.
-* https://vitejs.cn/guide/features.html#postcss
-**/
-
-/* theme color */
-$--color-primary: #1890ff;
-$--color-success: #13ce66;
-$--color-warning: #ffba00;
-$--color-danger: #ff4949;
-// $--color-info: #1E1E1E;
-
-$--button-font-weight: 400;
-
-// $--color-text-regular: #1f2d3d;
-
-$--border-color-light: #dfe4ed;
-$--border-color-lighter: #e6ebf5;
-
-$--table-border: 1px solid #dfe6ec;
-
-$--font-path: "~element-plus/theme-chalk/fonts";
-
-// the :export directive is the magic sauce for webpack
-// https://www.bluematador.com/blog/how-to-share-variables-between-js-and-sass
-:export {
-  theme: $--color-primary;
-}