fix(control_performance_analysis): fix unusedFunction (autowarefoundation#8557)

fix:unusedFunction

Signed-off-by: kobayu858 <yutaro.kobayashi@tier4.jp>

Author: kobayu858

control/control_performance_analysis/include/control_performance_analysis/control_performance_analysis_utils.hpp

@@ -79,10 +79,6 @@ inline geometry_msgs::msg::Quaternion createOrientationMsgFromYaw(double yaw_ang
 // p-points a, b contains [x, y] coordinates.
 double determinant(std::array<double, 2> const & a, std::array<double, 2> const & b);
 
-double triangleArea(
-  std::array<double, 2> const & a, std::array<double, 2> const & b,
-  std::array<double, 2> const & c);
-
 double curvatureFromThreePoints(
   std::array<double, 2> const & a, std::array<double, 2> const & b,
   std::array<double, 2> const & c);

control/control_performance_analysis/src/control_performance_analysis_utils.cpp

@@ -25,15 +25,5 @@ double determinant(std::array<double, 2> const & a, std::array<double, 2> const
   return a[0] * b[1] - b[0] * a[1];
 }
 
-double triangleArea(
-  std::array<double, 2> const & a, std::array<double, 2> const & b, std::array<double, 2> const & c)
-{
-  double m1 = determinant(a, b);
-  double m2 = determinant(b, c);
-  double m3 = determinant(c, a);
-
-  return 0.5 * (m1 + m2 + m3);
-}
-
 }  // namespace utils
 }  // namespace control_performance_analysis