instance types update

Author: mletalie

modules/sdpolicy-am-gcp-compute-types.adoc

@@ -8,7 +8,7 @@
 {product-title} offers the following worker node types and sizes on Google Cloud that are chosen to have a common CPU and memory capacity that are the same as other cloud instance types:
 [NOTE]
 ====
-`e2`, `n2`, `c2`, and `a2` compute types are available for CCS only.
+`e2` and `a2` compute types are available for CCS only.
 ====
 
 .General purpose