[New Check]: check for needless `die`s

[kuraga]

Is there an existing such new check request for this?

• I have searched the existing issues

Explain

It issues on emake || die, etc.

• level: warning

See also: #680.

Result level

warning

[thesamesam]

The description could be more verbose. The issue is where helpers defined by PMS are required to die for you, hence || die is redundant.

Note that this requires care to handle nonfatal.