Fix old image not removed on update

[MrCrayon]

When image filed is used and a new image is uploaded the old one was not removed.

Fixes #2264

[codecov]

Codecov Report

Merging #5196 (42a0ed4) into 1.4 (ed3fe6e) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                1.4    #5196      +/-   ##
============================================
+ Coverage     63.26%   63.31%   +0.05%     
  Complexity     1379     1379              
============================================
  Files           194      194              
  Lines          4064     4070       +6     
============================================
+ Hits           2571     2577       +6     
  Misses         1493     1493              

Impacted Files	Coverage Δ	Complexity Δ
src/Http/Controllers/VoyagerBaseController.php	57.66% <100.00%> (+0.62%)	143.00 <0.00> (ø)

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