(bug 58188) global name 'lastmove' is not defined but obsolete

We got the moved target page through page2.getMovedTarget().
Remove the old code from r10848

Change-Id: I2c46d65613c0c0fa9ee9493f0fb8c2ec53a2266a
Merge "(bug 58188) global name 'lastmove' is not defined but obsolete"