testsuite: Don't collect residency for T4801

I previously increased the size of the acceptance window from 2% to 5%
but this still isn't enough. Regardless, measuring bytes allocated
should be sufficient to catch any regressions.

testsuite/tests/perf/compiler/all.T

@@ -42,7 +42,6 @@ test('T3294',
 
 test('T4801',
      [collect_compiler_stats('bytes allocated',2),
-      collect_compiler_residency(5),
       only_ways(['normal']),
       extra_hc_opts('-static'),
       ],