Remove Logger and RoslynCompilerEventSource

[pharring]

Remove the Logger and ETW event source from the compiler layer. Addresses #1007

[pharring]

@agocke @heejaechang Please review. This should be simple, it's just deleting code :-)

[agocke]

LGTM, thanks for taking this one!

[agocke]

BTW, this change is way easier to review if you add &w=1 to your URL -- it'll hide the whitespace changes.

[heejaechang]

adding @shyamnamboodiripad

[heejaechang]

looks good to me.

...

so, I guess compiler doesnt need etw for perf investigation at all? I find it quite useful when trying to improve perf of feature.

I used it to improve FAR, HR, formatting engine, tagger and more. basically it let me see sequence of all events and time each pipe line took.

[VSadov]

LGTM

[shyamnamboodiripad]

LGTM. Its sad that we had to remove the logger code entirely - but I guess we can always bring this back if we need to.

[agocke]

@shyamnamboodiripad @heejaechang This is why we have version control :) All this code is a revert away (if we really want it).

[shyamnamboodiripad]

👍