RTSD-272, fixed bug

init_sdptr_python.sh

@@ -63,8 +63,6 @@ source ${SDPTR_DIR}/generic.sh
 sdptr_pathadd "PATH" ${SDPTR_DIR}/test/py/control ${SDPTR_DIR}/test/py/stub
 sdptr_pathadd "PYTHONPATH" ${SDPTR_DIR}/test/py/
 
-unset SDPTR_DIR
-
 # Mark the fact that we read this file and end the guarded part
 python_init_read="yes"
 fi
\ No newline at end of file