[libFuzzer] Disable value-profile-strncmp.test on aarch64.
Test no longer finds the BINGO on clang-cmake-aarch64-full bot, and I
can't reproduce on our ARM machine.
-UNSUPPORTED: freebsd
+UNSUPPORTED: freebsd, aarch64
CHECK: BINGO
RUN: %cpp_compiler %S/SingleStrncmpTest.cpp -o %t-SingleStrncmpTest
RUN: not %run %t-SingleStrncmpTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
