bug#910: leim-list.el is looked up in too many places at startup

[Dan Nicolaescu]

strace emacs -Q

shows that leim-list.el is looked up in 32 locations at startup.  We
only have it in a single place.
Is this a leftover from the time when leim was distributed separately
from emacs?

It would be good if this redundant work would be avoided.