Revert "trap_handler: Set status.skip_export when halting a wave"

This reverts commit c5db063b2f.  This
change is required for the runtime to generate reliable core dump files,
but this feature has been disabled for now by
5e3be9c28a.  Until it is needed, revert
the ABI change in the trap handler to maintain compatibility with older
debugger.

Change-Id: I77a1562dc7962befe2bf88442df858e2d2b1c5ab

runtime/hsa-runtime/loader/executable.cpp

@@ -81,10 +81,8 @@ __attribute__((noinline)) static void _loader_debug_state() {
 // 6: New trap handler ABI. ttmp6[25:0] contains dispatch index modulo queue size
 // 7: New trap handler ABI. Send interrupts as a bitmask, coalescing concurrent exceptions.
 // 8: New trap handler ABI. for gfx940: Initialize ttmp[4:5] if ttmp11[31] == 0.
-// 9: New trap handler ABI. For gfx11: Save PC in ttmp11[22:7] ttmp6[31:0], and park the wave if stopped.
-// 10: New trap handler ABI. Set status.skip_export when halting the wave.
-//                           For gfx940, set ttmp6[31] = 0 if ttmp11[31] == 0.
-HSA_API r_debug _amdgpu_r_debug = {10,
+// 9: New trap handler API. For gfx11: Save PC in ttmp11[22:7] ttmp6[31:0], and park the wave if stopped.
+HSA_API r_debug _amdgpu_r_debug = {9,
                            nullptr,
                            reinterpret_cast<uintptr_t>(&_loader_debug_state),
                            r_debug::RT_CONSISTENT,