Remove RTC as a supported peripheral for NCS36510

[cmonr]

Description

Disables RTC for NCS36510 since feature is blocking #5087 from building correctly, and issue will not be resolved soon (#5308).

Status

READY

Related PRs

Unblocks #5087

[cmonr]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 908
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/5898/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build

[mbed-ci]

Test : SUCCESS

Build number : 750
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/5898/750

[mbed-ci]

Exporter Build : ABORTED

Build number : 583
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/5898/

[cmonr]

Silly Windows exporters...

/morph export-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 585
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/5898/

[0xc0170]

Disables RTC for NCS36510 since feature is blocking #5087 from building correctly, and issue will not be resolved soon (#5308).

This info should be part of the commit msg (I'll add this useful info to the merge commit)