CC3XX: Remove memory allocation functions for no_os

Removes the memory allocation functions in the no_os PAL of the CC3XX
runtime library. These functions are completely unused by the library
but just the references to malloc, realloc and free caused the libc
malloc library and its dependencies to be pulled into the binary.

Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Change-Id: I413fb376248fc37273b1954630f0b9ad4f7f894b
2 files changed