Restore: Sync Gutenberg @ b79bbe25a1b00ce640bfab363f182c678181082f

See changelog in 5a8baa4

> Scripts: Remove default attributes from tags.

Author: dmsnell

src/wp-content/themes/twentysixteen/css/blocks.css

@@ -77,7 +77,7 @@ p.has-drop-cap:not(:focus)::first-letter {
 .wp-block-quote {
 	border-width: 0 0 0 4px;
 }
-
+ 
 :where(.rtl) .wp-block-quote {
 	border-width: 0 4px 0 0;
 }
@@ -106,11 +106,6 @@ p.has-drop-cap:not(:focus)::first-letter {
 	color: inherit;
 }
 
-.has-text-color .wp-block-quote:not(.has-text-color),
-.has-text-color .wp-block-quote:not(.has-text-color) cite {
-	color: inherit;
-}
-
 .wp-block-quote cite:before {
 	content: "\2014\00a0";
 }

src/wp-content/themes/twentysixteen/css/editor-blocks.css

@@ -321,8 +321,7 @@ figure[class*="wp-block-"] > figcaption {
 	margin-bottom: 1.4736842105em;
 }
 
-.wp-block-quote__citation,
-.wp-block-quote cite {
+.wp-block-quote__citation {
 	color: #1a1a1a;
 	display: block;
 	font-size: 16px;
@@ -334,11 +333,6 @@ figure[class*="wp-block-"] > figcaption {
 	color: inherit;
 }
 
-.has-text-color .wp-block-quote:not(.has-text-color),
-.has-text-color .wp-block-quote:not(.has-text-color) cite {
-	color: inherit;
-}
-
 .wp-block-quote__citation:before {
 	content: "\2014\00a0";
 }
@@ -556,7 +550,7 @@ figure[class*="wp-block-"] > figcaption {
 .wp-block-pullquote[style*="font-size"] cite {
 	font-size: inherit;
 }
-
+	
 .wp-block-pullquote[style*="line-height"] blockquote,
 .wp-block-pullquote[style*="line-height"] blockquote p,
 .wp-block-pullquote[style*="line-height"] cite {