index.js
function removeEmailFromAllBooks(callback, email){
    if ((email===undefined)||(!email.length)){
        return callback(returnError('Empty email'));
    }
    sendRequest( 'emails/' + email, 'DELETE', {}, true, callback );
}
function removeEmailFromAllBooks(callback, email){
    if ((email===undefined)||(!email.length)){
        return callback(returnError('Empty email'));
    }
    sendRequest( 'emails/' + email, 'DELETE', {}, true, callback );
}
function removeEmailFromAllBooks ( callback , email ) { if ( ( email === undefined ) || ( ! email . length ) ) { return callback ( returnError ( 'Empty email' ) ) ; } sendRequest ( 'emails/' + email , 'DELETE' , { } , true , callback ) ; }
Remove email from all books

@param callback
@param email
Remove email from all books