CellInfoLte - Turn off debug

With debug on, it constantly spams the log. Turn it off for now to
keep the log cleaner.

Change-Id: I115a613c7140545d626c4f4fda7a697a00b9cc35
Memory leak due to bad destroy sequence

During the destroy sequence, it happens that the mWebViewClassic was
set to null in the transferMessages function and consequently, the
call to WebCoreThreadWatchdog.unregisterWebView(mWebViewClassic) is
not really removing the view from the watchdog's list; creating a
memory leak.

picked from master branch https://android-review.googlesource.com/#/c/48087/

Change-Id: I2bae7c8d7c473e2af25e62a485699f88269d6658
Author: Jean-Christophe PINCE <jean-christophe.pince@intel.com>
Signed-off-by: Jean-Christophe PINCE <jean-christophe.pince@intel.com>
Signed-off-by: Shuo Gao <shuo.gao@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 57869