Remove warning from db-select-scalar which is a valid name for a
function which does allow you to select a scalar.

{{{

;; returns 1 val - the traditional expectation of "scalar" db
;; functions
(db-select-scalar 'servicename :from 'services
  :where [= [serviceid] 1200])

;; returns 1 row - the not usually the expectation of "scalar" db
;; functions, but the same exact code
(db-select-scalar 'services :where [= [serviceid] 1200])

;; Thus db-select-first was added simply to have a second name that
;; matches expectations

}}}
better doc strings