Quieten compilation of some test/lisp files

Quieten compilation of some test/lisp files

* test/lisp/dired-tests.el (dired-test-bug27243-02)
(dired-test-bug27243-03, dired-test-bug27899)
(dired-test-with-temp-dirs): Remove unused local variables.
* test/lisp/hi-lock-tests.el (hi-lock-bug26666)
(hi-lock-test-set-pattern): Mark unused arguments.
* test/lisp/ses-tests.el (ses-tests-renamed-cells-row-insertion):
Remove unused global "ses-tests-trigger".
* test/lisp/simple-tests.el (line-number-at-pos-when-passing-point):
Remove unused local "pos".
* test/lisp/emacs-lisp/benchmark-tests.el (benchmark-tests):
Pacify compiler.
* test/lisp/emacs-lisp/package-tests.el (package-test-signed):
Replace obsolete function epg-configuration.
* test/lisp/ls-lisp-tests.el:
* test/lisp/eshell/em-ls-tests.el: Require dired.
* test/lisp/progmodes/ruby-mode-tests.el
(ruby-forward-sexp-skips-method-calls-with-keyword-names):
* test/lisp/vc/diff-mode-tests.el
(diff-mode-test-ignore-trailing-dashes): Replace interactive funcs.