fix deprecated include (#1530) (#1531)

only the removal of the library <ctgmath> is necessary.
It was deprecated in C++17 and <cmath> is already included.


(cherry picked from commit 09e440f)

Signed-off-by: mosfet80 <[email protected]>
Co-authored-by: mosfet80 <[email protected]>

Author: mergify[bot]

rviz_default_plugins/src/rviz_default_plugins/view_controllers/orbit/orbit_view_controller.cpp

@@ -35,7 +35,6 @@
 #include <cmath>
 #include <complex>
 #include <cstdint>
-#include <ctgmath>
 #include <memory>
 #include <valarray>