Removed hardcoded CY8CPROTO_062_4343W bt baudrate limit.

[dustin-crossman]

Summary of changes

Remove hardcoded BT UART baudrate limit for CY8CPROTO_062_4343W board. These changes were dependent on #12167

Impact of changes

Migration actions required

Documentation

None

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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)

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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

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GT_FT_PROTO_062_4343W_GCC.txt

Failures and explanations:

• All sleep failures are expected due to to a known incompatibility between the sleep tests and our UART driver.
• The rtc failures are unexpected but are not related to changes from this PR. Will investigate and resolve in the future.

Reviewers

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[ciarmcom]

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

[0xc0170]

CI started

[mbed-ci]

Test run: FAILED

Summary: 1 of 11 test jobs failed
Build number : 1
Build artifacts

Failed test jobs:

• jenkins-ci/mbed-os-ci_cloud-client-pytest