Remove Web UI version

No reason to manage a version number separately from the overall
project. Remove the version and rename the element.
Based on feedback on https://gerrit.openbmc-project.xyz/#/c/10364/.

Change-Id: I055445db8bdda36dc408c057132e6e69b8935a6b
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/app/common/styles/layout/header.scss b/app/common/styles/layout/header.scss
index e14a5e6..a18d8ac 100644
--- a/app/common/styles/layout/header.scss
+++ b/app/common/styles/layout/header.scss
@@ -16,7 +16,7 @@
   z-index: 300;
 }
 
-.app__version {
+.header__title {
   margin-left: 1em;
   display: none;
   @include mediaQuery(x-small) {