diff --git a/s/seaborn/graph-salomon.dot b/s/seaborn/graph-salomon.dot
deleted file mode 100644
index 9f0f5266..00000000
--- a/s/seaborn/graph-salomon.dot
+++ /dev/null
@@ -1,111 +0,0 @@
-digraph graphname {
-"ncurses/6.0";
-"zlib/1.2.11";
-"M4/1.4.18";
-"seaborn/0.8.1-Py-3.6";
-"flex/2.6.3";
-"flex/2.6.0";
-"pytz/2017.3-Py-3.6";
-"M4/1.4.17";
-"six/1.11.0-Py-3.6";
-"Bison/3.0.4";
-"Py/3.6";
-"GMP/6.1.2";
-"libtool/2.4.6";
-"pyparsing/2.2.0-Py-3.6";
-"mkl/2017.4.239";
-"Tk/8.6.6";
-"pandas/0.22.0-Py-3.6";
-"GCCcore/6.3.0";
-"scipy/1.0.0-Py-3.6";
-"SQLite/3.17.0";
-"Tcl/8.6.6";
-"numpy/1.13.3-Py-3.6";
-"Automake/1.15";
-"libreadline/7.0";
-"python-dateutil/2.6.1-Py-3.6";
-"bzip2/1.0.6";
-"Autoconf/2.69";
-"freetype/2.8";
-"matplotlib/2.1.1-Py-3.6";
-"binutils/2.27-GCCcore-6.3.0";
-"GCC/6.3.0-2.27";
-"libpng/1.6.29";
-"Autotools/20150215";
-"help2man/1.47.4";
-"gettext/0.19.4";
-"XZ/5.2.3";
-"binutils/2.27";
-"Python/3.6.4-GCC-6.3.0-2.27-base";
-"seaborn/0.8.1-Py-3.6" -> "numpy/1.13.3-Py-3.6";
-"seaborn/0.8.1-Py-3.6" -> "scipy/1.0.0-Py-3.6";
-"seaborn/0.8.1-Py-3.6" -> "matplotlib/2.1.1-Py-3.6";
-"seaborn/0.8.1-Py-3.6" -> "pandas/0.22.0-Py-3.6";
-"seaborn/0.8.1-Py-3.6" -> "Py/3.6";
-"flex/2.6.3" -> "M4/1.4.18";
-"flex/2.6.3" -> "Bison/3.0.4"  [color=blue, style=dotted, arrowhead=diamond];
-"flex/2.6.3" -> "help2man/1.47.4"  [color=blue, style=dotted, arrowhead=diamond];
-"flex/2.6.0" -> "Bison/3.0.4";
-"pytz/2017.3-Py-3.6" -> "Py/3.6";
-"six/1.11.0-Py-3.6" -> "Py/3.6";
-"Bison/3.0.4" -> "M4/1.4.18"  [color=blue, style=dotted, arrowhead=diamond];
-"Py/3.6" -> "Python/3.6.4-GCC-6.3.0-2.27-base";
-"Py/3.6" -> "GCC/6.3.0-2.27";
-"GMP/6.1.2" -> "Autotools/20150215"  [color=blue, style=dotted, arrowhead=diamond];
-"libtool/2.4.6" -> "M4/1.4.17";
-"pyparsing/2.2.0-Py-3.6" -> "Py/3.6";
-"Tk/8.6.6" -> "Tcl/8.6.6";
-"Tk/8.6.6" -> "zlib/1.2.11";
-"pandas/0.22.0-Py-3.6" -> "numpy/1.13.3-Py-3.6";
-"pandas/0.22.0-Py-3.6" -> "pytz/2017.3-Py-3.6";
-"pandas/0.22.0-Py-3.6" -> "python-dateutil/2.6.1-Py-3.6";
-"pandas/0.22.0-Py-3.6" -> "Py/3.6";
-"GCCcore/6.3.0" -> "M4/1.4.18"  [color=blue, style=dotted, arrowhead=diamond];
-"GCCcore/6.3.0" -> "binutils/2.27"  [color=blue, style=dotted, arrowhead=diamond];
-"scipy/1.0.0-Py-3.6" -> "numpy/1.13.3-Py-3.6";
-"scipy/1.0.0-Py-3.6" -> "mkl/2017.4.239";
-"scipy/1.0.0-Py-3.6" -> "Py/3.6";
-"SQLite/3.17.0" -> "libreadline/7.0";
-"SQLite/3.17.0" -> "Tcl/8.6.6";
-"Tcl/8.6.6" -> "zlib/1.2.11";
-"numpy/1.13.3-Py-3.6" -> "mkl/2017.4.239";
-"numpy/1.13.3-Py-3.6" -> "Py/3.6";
-"Automake/1.15" -> "Autoconf/2.69";
-"libreadline/7.0" -> "ncurses/6.0";
-"python-dateutil/2.6.1-Py-3.6" -> "six/1.11.0-Py-3.6";
-"python-dateutil/2.6.1-Py-3.6" -> "Py/3.6";
-"Autoconf/2.69" -> "M4/1.4.18";
-"freetype/2.8" -> "libpng/1.6.29";
-"matplotlib/2.1.1-Py-3.6" -> "freetype/2.8";
-"matplotlib/2.1.1-Py-3.6" -> "libpng/1.6.29";
-"matplotlib/2.1.1-Py-3.6" -> "python-dateutil/2.6.1-Py-3.6";
-"matplotlib/2.1.1-Py-3.6" -> "numpy/1.13.3-Py-3.6";
-"matplotlib/2.1.1-Py-3.6" -> "pyparsing/2.2.0-Py-3.6";
-"matplotlib/2.1.1-Py-3.6" -> "six/1.11.0-Py-3.6";
-"matplotlib/2.1.1-Py-3.6" -> "Py/3.6";
-"binutils/2.27-GCCcore-6.3.0" -> "flex/2.6.3"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27-GCCcore-6.3.0" -> "Bison/3.0.4"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27-GCCcore-6.3.0" -> "zlib/1.2.11"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27-GCCcore-6.3.0" -> "binutils/2.27"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27-GCCcore-6.3.0" -> "GCCcore/6.3.0";
-"GCC/6.3.0-2.27" -> "GCCcore/6.3.0";
-"GCC/6.3.0-2.27" -> "binutils/2.27-GCCcore-6.3.0";
-"libpng/1.6.29" -> "zlib/1.2.11";
-"Autotools/20150215" -> "Autoconf/2.69";
-"Autotools/20150215" -> "Automake/1.15";
-"Autotools/20150215" -> "libtool/2.4.6";
-"XZ/5.2.3" -> "gettext/0.19.4";
-"XZ/5.2.3" -> "Autotools/20150215"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27" -> "flex/2.6.0"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27" -> "Bison/3.0.4"  [color=blue, style=dotted, arrowhead=diamond];
-"binutils/2.27" -> "zlib/1.2.11"  [color=blue, style=dotted, arrowhead=diamond];
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "bzip2/1.0.6";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "libreadline/7.0";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "SQLite/3.17.0";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "Tk/8.6.6";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "GMP/6.1.2";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "XZ/5.2.3";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "zlib/1.2.11";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "ncurses/6.0";
-"Python/3.6.4-GCC-6.3.0-2.27-base" -> "GCC/6.3.0-2.27";
-}