I don't think these are "redundant quotes" but rather ditto marks:
https://en.wikipedia.org/wiki/Ditto_mark this is quite clear here, for example: > u_int64_t p_uru_nvcsw; /* LONG: voluntary context switches. */ > - u_int64_t p_uru_nivcsw; /* LONG: involuntary ". */ > + u_int64_t p_uru_nivcsw; /* LONG: involuntary. */