Remove several /thirdparty/list/xxx endpoints because they are redundant
with the /thirdparties/ endpoint whith the 'mode' filter.
Remove the customer/byemail/{email} endpoint because it is redundant
with the /thirdparties/ endpoint whith the 'email' filter.
Remove all the /customer/ endpoints because they do the same thing as
the corresponding /thirdparty/ endpoints.
