Remove wrong dependencies to vcredist

qt.tools.vcredist, qt.tools.vcredist_64 contain the runtime
redistributables for Visual Studio 2010 only. It's pointless to let
MSVC2012, MSVC2013 packages depend on it.

(Because Qt Creator is still built with Visual Studio 2010 it will
be automatically included nevertheless. But that might change, as soon
as we start to build Qt Creator with a newer version ...)

Change-Id: I7a6909610a3583f32061c249c884c8ad8b72ce2d
Reviewed-by: Jani Heikkinen <jani.heikkinen@theqtcompany.com>
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
Update to latest Visual Studio 2010 runtime redistributables

Microsoft has released an 'MFC Security Update' of their
vcredist.exe for Visual Studio 2010 Service Pack 1 that we should
use. The name of the package is now just "vcredist_x86" and "vcredist_x64"
named like the original file from Microsoft.

Task-number: QTBUG-42529
Change-Id: I6628a1f77e005164767e934597f7040ac6e52e14
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>