Fix CAPD in-memory templates

Author: sbueringer

test/infrastructure/docker/templates/cluster-template-in-memory.yaml

@@ -21,8 +21,3 @@ spec:
         - class: default-worker
           name: md-0
           replicas: ${WORKER_MACHINE_COUNT}
-    variables:
-      - name: kubeadmControlPlaneMaxSurge
-        value: "1"
-      - name: imageRepository
-        value: "kindest"

test/infrastructure/docker/templates/clusterclass-in-memory.yaml

@@ -151,8 +151,3 @@ spec:
             - type: Ready
               status: "False"
               timeout: 300s
-  patches:
-    - name: test-patch
-      external:
-        generateExtension: generate-patches.${EXTENSION_CONFIG_NAME:-"scale"}
-        discoverVariablesExtension: discover-variables.${EXTENSION_CONFIG_NAME:-"scale"}