Removed gitlab tags on runners

.gitlab-ci.yml

@@ -15,6 +15,9 @@ compile-mandelbrot:
       paths:
         - a.out
   # Tag - an identifier to match a job with a specified machine. Useful for different provisions required by a machine.
+  tags:
+    - cool-runnings
+
 submit-mandelbrot:
   stage: submit
   dependencies:
@@ -24,3 +27,5 @@ submit-mandelbrot:
   artifacts:
       paths:
         - new1.ppm
+  tags:
+    - cool-runnings