eliminate ordering constraints

testsuite/tests/ghc-regress/cabal/cabal01/all.T

 setTestOpts(only_compiler_types(['ghc']))
 
+if config.have_profiling:
+    prof = '--enable-library-profiling'
+else:
+    prof = ''
+
 test('cabal01',
      ignore_output,
-     run_command, ['$MAKE cabal01 PROF='])
-if default_testopts.cleanup != '':
-    runCmd('$MAKE -C ' + in_testdir('') + ' clean')
-
-test('cabal01prof',
-     composes([req_profiling,
-               ignore_output]),
-     run_command, ['$MAKE cabal01 PROF=--enable-library-profiling'])
-
+     run_command, ['$MAKE cabal01 PROF=' + prof])
 if default_testopts.cleanup != '':
     runCmd('$MAKE -C ' + in_testdir('') + ' clean')