message: Remove unneccessary define.
  confirmed that this will no longer be needed:
diff: @@ -11,7 +11,6 @@ ifeq ($(TARGET_ARCH), $(findstring $(TARGET_ARCH), "fusion_f1 hifi4"))
  PLATFORM_FLAGS = \
  -DNNLIB_V2 \
  - -DXTENSA_NNLIB_MAX_SCRATCH_SIZE=70*1024 \
  -Wno-shadow
  CCFLAGS += $(PLATFORM_FLAGS)
  