Remove unsupported targets

[MarceloSalazar]

Summary of changes

This is another of a series of PRs (others #12775, #12810, #12864) to remove targets that are not supported or retired as explained in recent blog post.

There are individual commits to remove targets from targets.json and files/folders for the corresponding targets.

Impact of changes

The following targets are being removed:

• NXP: KL82Z (wasn't removed correctly here Remove unsupported targets #12864)
• Advantech ADV_WISE_1510 (renamed)
• Ublox (all)
• ARM_IOTSS_BEID

Migration actions required

• The targets listed above continue to be available in the 5.15 branch.

Documentation

• None.
  We'll update os.mbed.com/platforms with the list of supported platforms for Mbed 6

---

Pull request type

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

---

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

Expect regressions tests to be done by CI as part of this PR.

---

Reviewers

@ARMmbed/mbed-os-maintainers

[0xc0170]

CI started

[mbed-ci]

Test run: FAILED

Summary: 1 of 7 test jobs failed
Build number : 1
Build artifacts

Failed test jobs:

• jenkins-ci/mbed-os-ci_wisun-mesh-test

[0xc0170]

@mikter Could you please help reviewing wisun-mesh-tests runs in the PRs?

I'll restart