fix(ui): Remove unused expression in 'highlightsDataSection.spec.tsx'

[floels]

Goal

The goal of this PR is to remove an unused expression at the top of file static/app/components/ events/highlights/highlightsDataSection.spec.tsx:

https://github.com/getsentry/sentry/blob/3b17f232c2c704a660bfcdaec0e6daa11195228e/static/app/components/events/highlights/highlightsDataSection.spec.tsx#L1-L18

Legal Boilerplate

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.88%. Comparing base (3b17f23) to head (86e1d47). Report is 55 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #71149      +/-   ##
==========================================
- Coverage   79.70%   77.88%   -1.83%     
==========================================
  Files        6701     6528     -173     
  Lines      300378   290852    -9526     
  Branches    50340    50340              
==========================================
- Hits       239425   226520   -12905     
+ Misses      60521    58085    -2436     
- Partials      432     6247    +5815     

see 1732 files with indirect coverage changes