README.md: Remove obsolete note on divisions by zero in JITed programs

We have changed the behaviour for divisions by zero, and the note in the
README is no longer accurate. Let's remove it, since we got rid of the
disparity between the interpreter and the JIT-compiler on that point.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>

README.md

@@ -634,11 +634,6 @@ on your own.
 * The JIT compiler produces an unsafe program: memory access are not tested at
   runtime (yet). Use with caution.
 
-* Contrary to the interpreter, if a division by 0 is attempted, the JIT program
-  returns `0xffffffffffffffff` and exits cleanly (no `Error` returned). This is
-  because the author has not found how to return something more explicit
-  from the generated assembly so far.
-
 * A small number of eBPF instructions have not been implemented yet. This
   should not be a problem for the majority of eBPF programs.