is-div-test.S: remove wrong code introduced in previous patch

* testsuite/test-code-or1k/ChangeLog

2013-04-22  Peter Gavin  <pgavin@gmail.com>

	* inst-set-test/is-div-test.S: remove wrong code introduced in
	previous patch
fix l.div with dividend 0x8000000 and divisor 0xffffffff

* ChangeLog:

2013-04-22  Peter Gavin  <pgavin@gmail.com>

	* cpu/or32/insnset.c: (l_div) check for 0x80000000 / 0xffffffff,
	and treat it like division by zero (set OV flag, do not write to
	destination register).  The C standard specifies that this
	operation is undefined, and will typically raise an exception,
	aborting the simulator, just like divide by zero.  So this change
	not only changes the ISA, but fixes a bug in the simulator.

* testsuite/ChangeLog:

2013-04-22  Peter Gavin  <pgavin@gmail.com>

	* or1ksim.test/inst-set-test.exp: add test case for l.div with
	dividend 0x80000000 and divisor 0xffffffff.  The behavior should
	be the same as for divide by zero (set OV flag, don't write
	result).

* testsuite/test-code-or1k/ChangeLog:

2013-04-22  Peter Gavin  <pgavin@gmail.com>

	* inst-set-test/is-div-test.S: add test case for l.div with
	dividend 0x80000000 and divisor 0xffffffff.  The behavior should
	be the same as for divide by zero (set OV flag, don't write
	result).