style: Remove unnecessary table border width from custom theme (facebook#4413)

Author: clicktodev

website/src/css/customTheme.scss

@@ -39,7 +39,6 @@
   --ifm-color-warning: #ffe564;
   --ifm-alert-color: var(--ifm-font-color-base);
   --ifm-pagination-nav-color-hover: var(--ifm-color-emphasis-300);
-  --ifm-table-border-width: 0.005rem;
   --ifm-navbar-sidebar-width: 100%;
   --ifm-hr-border-color: var(--docusaurus-collapse-button-bg-hover);
   --docusaurus-blog-social-icon-size: 16px;