Removes a member with name of key
name of the member to be removed
// remove auto hibon = new HiBON; hibon["a"] = 1; hibon["b"] = 2; hibon["c"] = 3; hibon["d"] = 4; assert(hibon.hasMember("b")); hibon.remove("b"); assert(!hibon.hasMember("b"));
Removes a member with name of key