Drop packages in g2o.tex

doc/g2o.tex

@@ -1,11 +1,9 @@
 \documentclass[a4paper]{article}
 \usepackage{graphicx}
-\usepackage{fullpage}
 \usepackage{graphicx} % for pdf, bitmapped graphics files
 \usepackage{amsmath} % assumes amsmath package installed
 \usepackage{amssymb}  % assumes amsmath package installed\ref
 \usepackage{psfrag}
-\usepackage{algorithmic}
 \usepackage{algorithm}
 \usepackage{color}
 \usepackage{xcolor}