[flang] Disable pr36006-2 on aarch64. (#104)

It used to fail due to the missing runtime support, but this
was not considered a failure.
It fails due to llvm/llvm-project#84088 now.

This should resolve the buildbot failure:
https://lab.llvm.org/buildbot/#/builders/184/builds/10735

Author: vzakhari

Fortran/gfortran/regression/tests.cmake

@@ -2192,7 +2192,7 @@ compile;pr34163.f90;;-O2 -fno-tree-pre -fpredictive-commoning -fdump-tree-pcom-d
 compile;pr35031.f90;xfail;;;
 compile;pr35849.f90;xfail;;;
 compile;pr36006-1.f90;;;;
-compile;pr36006-2.f90;;;;
+compile;pr36006-2.f90;;;;aarch64.+-.+-.+
 compile;pr36192.f90;xfail;;;
 compile;pr36192_1.f90;xfail;;;
 compile;pr36206.f;;-O3;;
@@ -6231,4 +6231,4 @@ run;zero_sized_3.f90;;;;
 run;zero_sized_4.f90;;;;
 run;zero_sized_5.f90;;;;
 run;zero_sized_8.f90;;;;
-run;zero_sized_9.f90;;;;
+run;zero_sized_9.f90;;;;