build: Properly ignore ntnx API client from dependabot (#995)

The existing configuration still allowed pre-release updates and there
is no way to configure this. Removing the update-types means this will
always be ignored and only updated when the NCN ntnx client is updated.

**What problem does this PR solve?**:

**Which issue(s) this PR fixes**:
Fixes #

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.github/dependabot.yml

@@ -28,7 +28,6 @@ updates:
       update-types: [ "version-update:semver-major", "version-update:semver-minor" ]
     # Ignore ntnx-api-golang-clients modules major, minor, and patch as they are upgraded together with prism-go-client.
     - dependency-name: "github.com/nutanix/ntnx-api-golang-clients/*"
-      update-types: [ "version-update:semver-major", "version-update:semver-minor", "version-update:semver-patch" ]
 
   - package-ecosystem: "gomod"
     directory: "/hack/third-party/capa"