Remove Ethernet from NUCLEO_F429ZI test
Remove Ethernet from NUCLEO_F429ZI test

Pending EMAC driver update, these tests won't compile.

c1728p9/mbed-os,andcor02/mbed-os,mbedmicro/mbed,c1728p9/mbed-os,andcor02/mbed-os,andcor02/mbed-os,kjbracey-arm/mbed,betzw/mbed-os,kjbracey-arm/mbed,betzw/mbed-os,kjbracey-arm/mbed,betzw/mbed-os,mbedmicro/mbed,c1728p9/mbed-os,betzw/mbed-os,c1728p9/mbed-os,andcor02/mbed-os,c1728p9/mbed-os,andcor02/mbed-os,kjbracey-arm/mbed,mbedmicro/mbed,betzw/mbed-os,andcor02/mbed-os,mbedmicro/mbed,c1728p9/mbed-os,betzw/mbed-os,mbedmicro/mbed