FreeRTOS MPU: Remove MPU region number check #2936

Job	Run time
GCC MicroBlaze Toolchain	3m 18s
GNU MSP430 Toolchain	2m 15s
CMake Example with Native GCC	15s
GNU ARM Toolchain	1m 44s
Native GCC (macos-latest)	3m 4s
WIN32 MingW	2m 52s
Native GCC (ubuntu-latest)	1m 30s
WIN32 MSVC	3m 29s
	18m 27s

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