Rollup merge of #105619 - notriddle:notriddle/source-pre-overflow, r=GuillaumeGomez

rustdoc: remove no-op CSS `.source pre { overflow: auto }`

Since source pages use the `example-wrap` wrapper, this rule became redundant because there is already an `overflow-x: auto` rule.

Author: matthiaskrgr

src/librustdoc/html/static/css/rustdoc.css

@@ -523,7 +523,6 @@ ul.block, .block li {
 }
 
 .source .content pre.rust {
-	overflow: auto;
 	padding-left: 0;
 }