Remove setting RESOURCE_DIR env.var: it is not required to be set to run serialization tests for luni module
Remove setting RESOURCE_DIR env.var: it is not required to be set to run serialization tests for luni module

svn path=/incubator/harmony/enhanced/classlib/trunk/; revision=427482

freeVM/freeVM,freeVM/freeVM,freeVM/freeVM,freeVM/freeVM,freeVM/freeVM