Remove URL key from desktop file

[Vascom]

URL key can present only if entry is Link type but not Application. https://standards.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#recognized-keys

[CLAassistant]

All committers have signed the CLA.

[codecov[bot]]

Codecov Report

Merging #264 into develop will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #264   +/-   ##
========================================
  Coverage    75.77%   75.77%           
========================================
  Files          121      121           
  Lines        12704    12704           
  Branches      1679     1679           
========================================
  Hits          9626     9626           
  Misses        3027     3027           
  Partials        51       51

[rakhimov]

Thanks.