Remove unused Nordic TARGET_SDK_11

[ghost]

Summary of changes

The target for Nordic SDK_11 seems unused by anything in mbed-os itself.

Impact of changes

I don't think there is any impact for supported targets in mbed-os, since all consumers have been removed.

Migration actions required

Documentation

---

Pull request type

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

I'm not sure how to categorize this.

Test results

[] No Tests required for this change (E.g docs only update)
[x] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

---

Reviewers

---

[ciarmcom]

@jrobeson, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

[ghost]

Is there any way I can get in touch with the folks working on Nordic devices? I want to know if nrfx can/will be updated, and how much the SDK versions matter for nordic devices due to the existence of nrfx.

[0xc0170]

If it's not used anymore, it's still on 5.15 branch. But lets wait for @ARMmbed/mbed-os-pan review

[0xc0170]

CI started

[mbed-ci]

Jenkins CI Test : ✔️ SUCCESS

Build Number: 1 | 🔒 Jenkins CI Job | 🌐 Logs & Artifacts

CLICK for Detailed Summary

jobs	Status
jenkins-ci/mbed-os-ci_unittests	✔️
jenkins-ci/mbed-os-ci_build-greentea-ARM	✔️
jenkins-ci/mbed-os-ci_build-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-cloud-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_build-greentea-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_build-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_build-cloud-example-ARM	✔️
jenkins-ci/mbed-os-ci_dynamic-memory-usage	✔️
jenkins-ci/mbed-os-ci_cloud-client-pytest	✔️
jenkins-ci/mbed-os-ci_greentea-test	✔️

[0xc0170]

@ARMmbed/mbed-os-pan Please review