Kill an crufty and outdated manual link to the lib

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@7502 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/src/bindings/ruby/simgrid_ruby.so b/src/bindings/ruby/simgrid_ruby.so
deleted file mode 120000 (symlink)
index 91d25ac..0000000
--- a/src/bindings/ruby/simgrid_ruby.so
+++ /dev/null
@@ -1 +0,0 @@
-../../.libs/libsimgrid_ruby.so
\ No newline at end of file