Remove alias make targets to facilitate tab completion

When running the check/sort/trim make targets, I normally type something
along the lines of:

    make check-d<TAB>

And let the shell tab completion finish the line for me. As there exists
multiple variations, (check-dictionary and check-dictionaries) tab
completion stops at the common substring and then I must finish typing
the rest of the command.

By removing the aliases, tab completion will complete the full command
immediately.