rustdoc: remove no-op CSS .search-results .result-name > span

The rule `display: inline-block` was added in
5afa52b.
The `margin: 0` and `font-weight: normal` were added in
c01bd56.

Both seem to have been added to override class-based rules that were
targetted at method sections. See
<https://github.com/rust-lang/rust/blob/c01bd560e2f87a9a960ed071213edd70f73171a8/src/librustdoc/html/static/rustdoc.css#L140-L148>
for an example. The selectors that these were meant to override were changed
in a8318e4 and
76a3b60 to be more specific, so they no
longer need to be overridden.

Author: notriddle

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

@@ -987,12 +987,6 @@ so that we can apply CSS-filters to change the arrow color in themes */
 	padding-right: 1em;
 }
 
-.search-results .result-name > span {
-	display: inline-block;
-	margin: 0;
-	font-weight: normal;
-}
-
 .popover {
 	font-size: 1rem;
 	position: absolute;

src/test/rustdoc-gui/search-result-display.goml

@@ -13,6 +13,9 @@ size: (600, 100)
 // when computed it's larger.
 assert-css: (".search-results div.desc", {"width": "566px"})
 
+// The result set is all on one line.
+assert-css: (".search-results .result-name > span", {"display": "inline"})
+
 // Check that the crate filter `<select>` is correctly handled when it goes to next line.
 // To do so we need to update the length of one of its `<option>`.
 size: (900, 900)