[meld: 2/3] remove unused `data/icons/svg`

[Kai Willadsen <kaiw src gnome org>]

commit 4fdbbc704189154b0ae63c98bf24dc319b63ca02
Author: Vasily Galkin <galkin-vv ya ru>
Date:   Fri Jun 12 00:03:00 2020 +0300

    remove unused `data/icons/svg`
    
    Those icons were used earlier instead of appointment-new-symbolic
    for version control.
    
    Though they can be useful for some future redesign,
    storing unused icons the current repository looks too confusing.
    
    Even used icons has complexity:
    some icons are in data/icons and other in meld/resources/icons.

 data/icons/svg/meld-vc-icon-22.svg | 561 -------------------------------
 data/icons/svg/meld-vc-icon.svg    | 668 -------------------------------------
 2 files changed, 1229 deletions(-)