Revert "export IProblem"

Authored by brauch on Oct 16 2016, 2:28 PM.

Description

Revert "export IProblem"

Actually, let's not put this into 5.0, it breaks binary compatibility.
This reverts commit e4fb596442fe7cb1f5a96c377a08c0aee917b05c.

Details

Committed
brauchOct 16 2016, 2:28 PM
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R32:e4fb596442fe: export IProblem
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R32:e4fb596442fe: export IProblem