Remove duplicate location in booking confirmation email

[miaulalala]

Fixes #4681

[codecov]

Codecov Report

Base: 41.84% // Head: 41.81% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (26f7de9) compared to base (9c9eac4).
Patch has no changes to coverable lines.

❗ Current head 26f7de9 differs from pull request most recent head 39cc2c8. Consider uploading reports for the commit 39cc2c8 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4682      +/-   ##
============================================
- Coverage     41.84%   41.81%   -0.03%     
+ Complexity      349      348       -1     
============================================
  Files           226      226              
  Lines          5662     5660       -2     
  Branches        738      738              
============================================
- Hits           2369     2367       -2     
  Misses         3293     3293              

Flag	Coverage Δ
javascript	31.42% <ø> (ø)
php	69.05% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../calendar/lib/Service/Appointments/MailService.php	98.07% <0.00%> (-0.04%)	⬇️

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