Make lisp/progmodes/elisp-mode-tests succeed

Make lisp/progmodes/elisp-mode-tests succeed

Shorthands are not supported with packages.  Add :expected-result
accordingly.

* test/lisp/progmodes/elisp-mode-tests.el (elisp-shorthand-read-buffer):
(elisp-shorthand-read-from-string):
(elisp-shorthand-load-a-file):
(elisp-shorthand-byte-compile-a-file):
(elisp-shorthand-completion-at-point):
(elisp-shorthand-escape):
(elisp-dont-shadow-punctuation-only-symbols): Expect to fail
if (featurep 'symbol-packages).