remove unused headers from Particle.h

remove include of PrVeloTracks.h and boost/container/static_vector.hpp from Particle.h as those are not needed, and whose inclusion only increases the time and memory required to compile code which includes Particle.h (which is a lot of code)

added cleanup label

assigned to @anfeng

changed the description

added RTA label

/ci-test

added ci-test-triggered label

• [2024-03-29 14:21] Validation started with lhcb-master-mr#11301

mentioned in issue Moore#730 (closed)

assigned to @oozcelik and unassigned @anfeng

assigned to @cagapopo

resolved all threads

merged

mentioned in commit 1ff0d66a