[Trivial] Replace usage of enforceEx with enforce

[Geod24]

The only place where it can't be replaced is this alias in std.format:

private alias enforceFmt = enforceEx!FormatException;

[quickfur]

LGTM

[quickfur]

Auto-merge toggled on

[yebblies]

The only place where it can't be replaced is this alias in std.format:

Should it be fixed to work there?

[Geod24]

Should it be fixed to work there?

Since #2288 , AFAIK, there is no reason to use enforceEx over enforce, except for this one.
It looks wrong to have one symbol dedicated to this rare use case, so I'd like to fix it, but I couldn't see any clean solution, besides fixing 9365.