Rollup merge of #102066 - notriddle:notriddle/headers-max-width, r=GuillaumeGomez

rustdoc: remove unnecessary `max-width` on headers

This code was added in 003b2bc1c6 to prevent these headers from overlapping `.out-of-band` side items. That stopped being a problem when 3f92ff34b5 switched rustdoc over to using `float`, rather than `position: absolute`, to implement this.

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

@@ -674,7 +674,6 @@ h2.location a {
 }
 
 .method > .code-header, .trait-impl > .code-header {
-	max-width: calc(100% - 41px);
 	display: block;
 }