Remove redundant 'msft' compilation error rule (bug#39595)

When the 'msft' rule was moved and modified, the old copy was left
in place by mistake.

* lisp/progmodes/compile.el (compilation-error-regexp-alist-alist):
Remove old rule.
1 job for emacs-27 in 63 minutes and 27 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #5007
test-all

01:03:27