Removed RUBYLIB and PATH from bashrc file

Prior to this commit, the root users bashrc file had commented out lines
for the previous dev training to set the RUBYLIB & PATH to the /usr/src
directory where Puppet FOSS was git cloned. This commit removes those
lines as they are no longer needed in any current training.
Merge pull request #54 from acidprime/bugfix/developer/8107

#(8107) & #(12344) Removed RUBYLIB and PATH from bashrc file