ARM: dts: msm: Remove duplicate avtimer node entry for msm8909

avtimer node defined here was resulting in two
node entries for avtimer with two different
lpass address. Remove this node to avoid duplication.

Change-Id: I406c2ff3983538f459b2adf0225c8236f14af111
Signed-off-by: Manjunatha Madana <mamanj@codeaurora.org>