Cleanup: remove redundant headers in source/blender/editors/

Remove redundant headers using
`./source/tools/utils_maintenance/code_clean.py`

Reviewed By: jmonteath

Ref D10364

source/blender/editors/physics/physics_pointcache.c

@@ -34,7 +34,6 @@
 #include "BKE_context.h"
 #include "BKE_global.h"
 #include "BKE_layer.h"
-#include "BKE_particle.h"
 #include "BKE_pointcache.h"
 
 #include "DEG_depsgraph.h"