fix(autoware_motion_utils): remove clang compiler error

[veqcc]

Description

Fixed clang compiler error

--- stderr: autoware_motion_utils                                
/home/veqcc/work/autoware/src/universe/autoware.universe/common/autoware_motion_utils/test/src/trajectory/benchmark_calcLateralOffset.cpp:29:18: error: unused variable 'epsilon' [-Werror,-Wunused-const-variable]
constexpr double epsilon = 1e-6;
                 ^
1 error generated.
gmake[2]: *** [CMakeFiles/test_autoware_motion_utils.dir/build.make:132: CMakeFiles/test_autoware_motion_utils.dir/test/src/trajectory/benchmark_calcLateralOffset.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:185: CMakeFiles/test_autoware_motion_utils.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2

Related links

Parent Issue:

• Link

How was this PR tested?

build and test

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

[github-actions]

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[satoshi-ota]

LGTM. Thanks 👍

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.78%. Comparing base (ddfacd3) to head (00aedb4).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9713      +/-   ##
==========================================
+ Coverage   29.76%   29.78%   +0.02%     
==========================================
  Files        1444     1445       +1     
  Lines      108686   108706      +20     
  Branches    42664    42666       +2     
==========================================
+ Hits        32352    32383      +31     
+ Misses      73150    73135      -15     
- Partials     3184     3188       +4     

Flag	Coverage Δ		*Carryforward flag
differential	32.05% <ø> (?)
total	29.77% <ø> (+<0.01%)	⬆️	Carriedforward from ddfacd3

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