Remove obsolete -O2 option for Fedora 30 unit test builds.
For some reason gcc9 would not do -O0 builds in combination with one of the options that libperl required.  Now that libperl is gone this exception is no longer required.
@@ -470,7 +470,7 @@ sub run
# Flags used to build test.c
my $strTestFlags =
($self->{bDebug} ? '-DDEBUG_TEST_TRACE ' : '') .
- ($self->{oTest}->{&TEST_VM} eq VM_F30 ? '-O2' : '-O0') .
+ '-O0' .
($self->{oTest}->{&TEST_VM} ne VM_U12 ? ' -ftree-coalesce-vars' : '') .
(vmCoverageC($self->{oTest}->{&TEST_VM}) && $self->{bCoverageUnit} ?
' -fprofile-arcs -ftest-coverage' : '') .
