py/runtime: Remove obsolete comment about mp_parse_compile_execute.
py/runtime: Remove obsolete comment about mp_parse_compile_execute.

mp_locals_get/set and mp_globals_get/set are now static-inline functions so
this comment is no longer correct.

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython