old translator remove - reference flag cleanup

processDoneStackTop() no longer needs to handle tokens with the
reference flag set (specifically for sub-string assignments) as this is
now handled elsewhere, therefore this code was removed; and the
temporary in-line variableErrStatus() previously called was removed

getOperand() was modified to clear the reference flag for an internal
function after it was set for a sub-string function for an reference
request since the reference flag is not needed after this point

removed the setting and clearing of the reference flag for tokens in
inputTranslate() and letTranslate()