@param hash hash for key
@param key the key
@param value the value to match if matchValue, else ignored
@param matchValue if true only remove if value is equal
@param movable if false do not move other nodes while removing
@return the node, or null if none
Implements Map.remove and related methods
@param hash hash for key @param key the key @param value the value to match if matchValue, else ignored @param matchValue if true only remove if value is equal @param movable if false do not move other nodes while removing @return the node, or null if none