Recipes: Disable Anet unit tests

Some Anet unit tests may fail because of the network configuration on
the testing host. These failures do not indicate a problem in Anet but
are a result of unpredictable events.

testing/scripts/recipes/005_anet.mk

@@ -14,7 +14,7 @@ all: install
 	@touch $@
 
 .$(PKG)-built: .$(PKG)-cloned
-	cd $(PKG) && make tests && make LIBRARY_KIND=static
+	cd $(PKG) && make LIBRARY_KIND=static
 	@touch $@
 
 install: .$(PKG)-built