fix(autoware_static_centerline_generator): fix unusedFunction

[kobayu858]

Description

This is a fix based on cppcheck unusedFunction warnings.

planning/autoware_static_centerline_generator/src/static_centerline_generator_node.cpp:600:0: style: The function 'update_road_boundary' is never used. [unusedFunction]
RoadBounds StaticCenterlineGeneratorNode::update_road_boundary(
^

planning/autoware_static_centerline_generator/src/utils.cpp:260:0: style: The function 'calcBoundsFromLanelets' is never used. [unusedFunction]
calcBoundsFromLanelets(const lanelet::ConstLanelets lanelets)
^

planning/autoware_static_centerline_generator/src/static_centerline_generator_node.cpp:180:0: style: The function 'arePointsClose' is never used. [unusedFunction]
bool arePointsClose(
^
planning/autoware_static_centerline_generator/src/static_centerline_generator_node.cpp:186:0: style: The function 'areSameDirection' is never used. [unusedFunction]
bool areSameDirection(
^

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How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

[kobayu858]

About update_road_boundary
// const auto road_bounds = update_road_boundary(selected_centerline);
The location used above was commented out, so I removed it as it is not currently used.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.06%. Comparing base (b9b0fa9) to head (212a717).
Report is 41 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8647   +/-   ##
=======================================
  Coverage   24.06%   24.06%           
=======================================
  Files        1398     1405    +7     
  Lines      102639   102639           
  Branches    39023    38984   -39     
=======================================
  Hits        24704    24704           
  Misses      75403    75403           
  Partials     2532     2532           

Flag	Coverage Δ		*Carryforward flag
differential	9.24% <ø> (?)
total	24.08% <ø> (+0.01%)	⬆️	Carriedforward from b9b0fa9

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[kobayu858]

@takayuki5168
I found a new warning and have removed arePointsClose and areSameDirection.

I would appreciate it if you could check again.