fix(tier4_state_rviz_plugin): fix unmatchedSuppression

[kobayu858]

Description

This is a fix based on cppcheck unmatchedSuppression warnings.
Due to a modification to cppcheck's CI, comment suppression is no longer required for items that previously generated warnings.

common/tier4_state_rviz_plugin/src/custom_button.cpp:67:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
void CustomElevatedButton::updateStyle(
^
common/tier4_state_rviz_plugin/src/custom_container.cpp:30:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
QGridLayout * CustomContainer::getLayout() const
^
common/tier4_state_rviz_plugin/src/custom_segmented_button.cpp:44:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
QButtonGroup * CustomSegmentedButton::getButtonGroup() const
^
common/tier4_state_rviz_plugin/src/custom_segmented_button_item.cpp:48:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
void CustomSegmentedButtonItem::setHovered(bool hovered)
^
common/tier4_state_rviz_plugin/src/custom_segmented_button_item.cpp:55:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
void CustomSegmentedButtonItem::setCheckableButton(bool checkable)
^
common/tier4_state_rviz_plugin/src/custom_segmented_button_item.cpp:70:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
void CustomSegmentedButtonItem::setDisabledButton(bool disabled)
^
common/tier4_state_rviz_plugin/src/custom_segmented_button_item.cpp:77:0: information: Unmatched suppression: unusedFunction [unmatchedSuppression]
void CustomSegmentedButtonItem::setActivated(bool activated)
^

Related links

Parent Issue:

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How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.92%. Comparing base (03ecd6e) to head (90da640).
Report is 24 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8921      +/-   ##
==========================================
- Coverage   27.98%   27.92%   -0.06%     
==========================================
  Files        1319     1319              
  Lines       98729    98671      -58     
  Branches    39809    39762      -47     
==========================================
- Hits        27631    27558      -73     
- Misses      71066    71080      +14     
- Partials       32       33       +1     

Flag	Coverage Δ		*Carryforward flag
differential	0.00% <ø> (?)
total	27.93% <ø> (-0.06%)	⬇️	Carriedforward from 03ecd6e

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[kobayu858]

@h-ohta @isamu-takagi @KhalilSelyan

Please confirm the PR. Thank you very much.