fix: removed non-existing Colum in single ticket-view

[Shivam327]

Solving issue #1408

Before:

After Fix:

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.03% ⚠️

Comparison is base (c0d10aa) 13.19% compared to head (564d639) 13.16%.
Report is 31 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1416      +/-   ##
==========================================
- Coverage   13.19%   13.16%   -0.03%     
==========================================
  Files          56       56              
  Lines        1955     1967      +12     
==========================================
+ Hits          258      259       +1     
- Misses       1697     1708      +11     

Files Changed	Coverage Δ
helpdesk/helpdesk/doctype/hd_ticket/api.py	0.00% <ø> (ø)

... and 1 file with indirect coverage changes

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