SuperSize: Remove strike-through from Tiger Viewer.

It was meant to denote removed symbols, but doesn't really work.
We'll track re-adding the feature in crbug/978307

Bug: 978307
Change-Id: Ide015ea4ca24ed57ca4f1f5d95363b21deb96bdd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1790791
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Commit-Queue: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#694760}

tools/binary_size/libsupersize/static/main.css

@@ -188,9 +188,6 @@ ul {
 .grew {
   color: #ea4335;
 }
-.removed {
-  text-decoration: line-through;
-}
 .highlight {
   background: #feefc3;
 }

tools/binary_size/libsupersize/static/tree-ui.js

@@ -48,11 +48,6 @@ const newTreeElement = (() => {
    */
   function _highlightSymbolName(symbolNameElement, node) {
     const dexMethodStats = node.childStats[_DEX_METHOD_SYMBOL_TYPE];
-    if (dexMethodStats && dexMethodStats.count < 0) {
-      // This symbol was removed between the before and after versions.
-      symbolNameElement.classList.add('removed');
-    }
-
     if (state.has('highlight')) {
       const stats = Object.values(node.childStats);
       if (stats.some(stat => stat.highlight > 0)) {