[css-contain] Remove paint-containment-with-fixed-position.html

Remove paint-containment-with-fixed-position.html since
contain-paint-010.html is a similar test, it just needs to
also test inline.

Change-Id: Iaa3f7fe7fc830b4f7f53d4f41af5983bab69f29d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3071279
Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
Commit-Queue: Rob Buis <rbuis@igalia.com>
Cr-Commit-Position: refs/heads/master@{#908827}

css/css-contain/contain-paint-010.html

@@ -9,7 +9,7 @@
 #contain-paint {
   contain: paint;
   width: 100px;
-  height: 100px;
+  height: 50px;
   background: red;
 }
 
@@ -19,10 +19,14 @@
   right: 0;
   background: green;
   width: 100px;
-  height: 100px;
+  height: 50px;
 }
 </style>
 <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
 <div id="contain-paint">
   <div id="fixed"></div>
 </div>
+<div id="contain-paint" style="display: inline-block">
+  <div id="fixed"></div>
+</div>
+