Remove duplicate step norm computation
Remove duplicate step norm computation

Change-Id: I58685b81e119360a5b9085bb44efc55131ec9117

ysonggit/ceres-solver,DougFirErickson/ceres-solver,DougFirErickson/ceres-solver,whuaegeanse/ceres-solver,whuaegeanse/ceres-solver,ysonggit/ceres-solver,whuaegeanse/ceres-solver,DougFirErickson/ceres-solver,ysonggit/ceres-solver,whuaegeanse/ceres-solver,ysonggit/ceres-solver,DougFirErickson/ceres-solver