pywrap: core: Remove/ignore a few functions.
pywrap: core: Remove/ignore a few functions.

This removes/makes swig ignore a few functions that are not usable from
python and generate warnings.

* Remove GP_Common.h, there is noting that can be used pyton there.

* Ignore GP_DebugPrint(), again not usable.

* Ignore Callback operations.

Signed-off-by: Cyril Hrubis <b1e90efd3b808b8e0bcf2a9a55fd8b9a779bfd81@ucw.cz>

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