Revert "Fix debug builds for Windows32 x86 bots."

This reverts commit 7d9d4f0dfe7fe6cab21c4dd45d2e86e7c49ed20a.

While this fixes the issue of running out of memory for linking
32bit debug builds on windows, it seems to introduce various problems
due to mixing debug and non-debug flags within the same binary.

Change-Id: I8836ffe4b4be61b652aae1bc3ce87246aef6e581
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>