boards: arm: lpcxpresso54114: Remove sample specific defconfig setting

Setting of CONFIG_HEAP_MEM_POOL_SIZE was done in the board defconfig
because open-amp was doing recursive builds and setting it the
defconfig made sure all builds were consistent.  However, now that we
don't do recursive builds this will get properly picked by from the
sample specific conf file.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2 files changed