Remove startup animation

Change-Id: I27288a0ace83d844269e82fdad1b544bd146cf11
Reviewed-on: https://chromium-review.googlesource.com/c/external/github.com/WebKit/JetStream/+/7037418
Reviewed-by: Marja Hölttä <marja@chromium.org>

JetStream.css

diff --git a/JetStream.css b/JetStream.css
index c48cc3c..9b202f5 100644
--- a/JetStream.css
+++ b/JetStream.css
@@ -59,11 +59,7 @@
     font-size: 1.6rem;
     font-weight: 400;
     line-height: 1.4;
-    background-repeat: no-repeat;
-    background-position: center -5vw;
-    background-size: 100vw;
     padding-bottom: 0px;
-    background-image: url('clouds.svg');
     overflow-y: hidden;
     height: 100%;
 }
@@ -117,16 +113,10 @@
     background-position: center;
     background-image: url('JetStream3Logo.svg');
     color: transparent;
-    animation: swingin 350ms ease-out forwards;
-    will-change: transform, opacity;
     height: 75px;
 }
 
 #jetstreams {
-    background-image: url('jetstreams.svg');
-    background-repeat: no-repeat;
-    background-size: contain;
-    background-position: center;
     padding: 2rem 0;
     margin: -2rem 0;
 }

JetStreamDriver.js

diff --git a/JetStreamDriver.js b/JetStreamDriver.js
index c941e82..6b42ad5 100644
--- a/JetStreamDriver.js
+++ b/JetStreamDriver.js
@@ -363,8 +363,6 @@
         for (const benchmark of this.benchmarks)
             text += benchmark.renderHTML();
 
-        const timestamp = performance.now();
-        document.getElementById('jetstreams').style.backgroundImage = `url('jetstreams.svg?${timestamp}')`;
         const resultsTable = document.getElementById("results");
         resultsTable.innerHTML = text;