Index: src/wp-content/themes/twentysixteen/css/blocks.css
===================================================================
--- src/wp-content/themes/twentysixteen/css/blocks.css	(revision 51930)
+++ src/wp-content/themes/twentysixteen/css/blocks.css	(working copy)
@@ -212,7 +212,6 @@
 .wp-block-table td {
 	font-weight: normal;
 	padding: 0.4375em;
-	text-align: left;
 }
 
 .wp-block-table th {
@@ -224,11 +223,6 @@
 	border-width: 0 1px 1px 0;
 }
 
-.rtl .wp-block-table th,
-.rtl .wp-block-table td {
-	text-align: right;
-}
-
 /*--------------------------------------------------------------
 4.0 Blocks - Layout Elements
 --------------------------------------------------------------*/