Remove the debug information workaround on Windows.
Remove the debug information workaround on Windows.

The Windows "dub test" build used to fail with "too much debug information for old CodeView format". Since this has now been fixed in Optlink, the workaround is no longer necessary.

alphaKAI/vibe.d,sigod/vibe.d,etcimon/vibe.0,veelo/vibe.d,Kozzi11/vibe.d,DBankov/vibe.d,Geod24/vibe.d,schuetzm/vibe.d,etcimon/vibe.0,Mihail-K/vibe.d,alphaKAI/vibe.d,gedaiu/vibe.d,AndreyMZ/vibe.d,nathanchristenson/vibe.d,etcimon/vibe.d,etcimon/vibe.d,nathanchristenson/vibe.d,alphaKAI/vibe.d,Yoplitein/vibe.d,rejectedsoftware/vibe.d,sigod/vibe.d,yannick/vibe.d,mfrischknecht/vibe.d,redstar/vibe.d,Yoplitein/vibe.d,Yoplitein/vibe.d,nathanchristenson/vibe.d,fast4shoot/vibe.d,ColdenCullen/vibe.d,chalucha/vibe.d,sigod/vibe.d,machindertechnologies/vibe.d