SECURITY remove lock pattern from being logged

commit Ibc0d5bfcee9673b1bf049bd69be80d2312602a47 made it so that the
lockpattern was loged in logcat as it was entered.
I'm really surprised nobody caught this.
This could also be solved by commenting the code out or just removing the line
without breaking anything.

Patch Set 3: Remove logging

modified:   core/java/com/android/internal/widget/LockPatternView.java

Change-Id: I2544eb11a2b003ef2d303470b19633241867fc29