Removing Microsoft.bcl* packages (dotnet/corefx#41270)

Removing Microsoft.bcl* packages (dotnet/corefx#41270)

* removing Microsoft.bcl packages

* targetframework conditions modified

* adding versionless config to avoid binplace

* uap standard conflicts

* remove package configurations

* negation if and remove exclude reference asset property

* adding choosing when statement

* using attribute

* Moveing packages to include to the common

* ChooseWhen -> IF

Commit migrated from https://github.com/dotnet/corefx/commit/99ea2b5aebf7361a5baa638c978cb6214fca5217