Remove duplicate and unused variant of git-logo.svg

[maxwiederhold]

This removes the duplicate image file git-Logo.svg, which is unused across the project.
It causes issues when used in case-insensitive operating systems.

[nngo]

This issue also manifest itself doing a git clone of this repo under Windows.

$ git clone git@github.com:redhat-rcue/rcue.git
Cloning into 'rcue'...
remote: Enumerating objects: 4, done.
remote: Counting objects: 100% (4/4), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 7632 (delta 0), reused 0 (delta 0), pack-reused 7628
Receiving objects: 100% (7632/7632), 19.82 MiB | 1.85 MiB/s, done.
Resolving deltas: 100% (5056/5056), done.
warning: the following paths have collided (e.g. case-sensitive paths
on a case-insensitive filesystem) and only one from the same
colliding group is in the working tree:

  'dist/img/git-Logo.svg'
  'dist/img/git-logo.svg'

Can we kick off the CI build again and get this fixed?