Disable jit in observer opline test

This test fails in --repeat mode with tracing JIT.

Author: nikic

ext/zend_test/tests/observer_opline_01.phpt

@@ -6,6 +6,7 @@ Observer: Ensure opline exists on the execute_data
 zend_test.observer.enabled=1
 zend_test.observer.observe_all=1
 zend_test.observer.show_opcode=1
+opcache.jit=0
 --FILE--
 <?php
 function foo()