Remove Fathom again (#367)

### Description

There was a merge issue in
https://github.com/valkey-io/valkey-io.github.io/pull/345/files, where
fathom was re-added, just removing it again.
 
### Issues Resolved

N/A

### Check List
- [X] Commits are signed per the DCO using `--signoff`

By submitting this pull request, I confirm that my contribution is made
under the terms of the BSD-3-Clause License.

Signed-off-by: Madelyn Olson <[email protected]>

Author: madolson

templates/includes/head.html

@@ -55,10 +55,6 @@
     <!-- Carousel JS -->
     <script src="/assets/js/carousel.js"></script>
 
-    <!-- Fathom - beautiful, simple website analytics -->
-    <script src="https://cdn.usefathom.com/script.js" data-site="FRZJYDAH" defer></script>
-    <!-- / Fathom -->
-
     <!-- cookie banner, LF standard -->
     <script src="https://cmp.osano.com/16A0DbT9yDNIaQkvZ/31b1b91a-e0b6-47ea-bde2-7f2bd13dbe5c/osano.js?variant=one"></script>