removed vsphere from source manager config (#520)

Author: kaovilai

config/manager/manager.yaml

@@ -60,8 +60,6 @@ spec:
             value: velero-plugin-for-microsoft-azure
           - name: VELERO_CSI_PLUGIN_REPO
             value: velero-plugin-for-csi
-          - name: VELERO_VSPHERE_PLUGIN_REPO
-            value: velero-plugin-for-vsphere
           - name: VELERO_TAG
             value: latest
           - name: VELERO_RESTIC_RESTORE_HELPER_TAG
@@ -74,8 +72,6 @@ spec:
             value: latest
           - name: VELERO_CSI_PLUGIN_TAG
             value: latest
-          - name: VELERO_VSPHERE_PLUGIN_TAG
-            value: 1.1.0
         args:
         - --leader-elect
         image: controller:latest