Remove Sandhills references from docs.

content/guides/running_applications/running_gaussian_at_hcc.md

@@ -22,7 +22,7 @@ For access, contact us at
  {{< icon name="envelope" >}}[hcc-support@unl.edu] (mailto:hcc-support@unl.edu)
 and include your HCC username. After your account has been added to the
 group "*gauss*", here are four simple steps to run Gaussian 09 on
-Sandhills, Tusker, and Crane:
+Tusker and Crane:
 
 **Step 1:** Copy **g09** sample input file and SLURM script to your
 "g09" test directory on the `/work` filesystem: