Additional Compiler error removal

[techpaul]

One of the remianing compiler warning errors can be removed by conditional compiling out a function in xmc_vadc.c and xmc_vadc.h as follows

#if 0
/* API to Set the Global IClass registers*/
void XMC_VADC_GLOBAL_InputClassInit(XMC_VADC_GLOBAL_t *const global_ptr, const XMC_VADC_GLOBAL_CLASS_t config,
                                          const XMC_VADC_GROUP_CONV_t conv_type, const uint32_t set_num)

Basically the function for classifying External Mux for ADC is not used in any of the board support packages for XMC-for-Arduino.

At this stage permanently comenting out the function will have no adverse effect on your code as it is never called.

My next pull request will include this

[techpaul]

Pull request was issued a few days ago

This has been merged in today at least in develop branch for those who want the fixes.

So closing this issue