Remove Co-routines from FreeRTOS-Kernel.

[paulbartell]

Remove Co-routines from FreeRTOS-Kernel.

Description

Remove the co-routines implementation from FreeRTOS-Kernel since this code is no longer maintained or widely used.

Related Forum post:

https://forums.freertos.org/t/about-coroutine/11716/2

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov[bot]]

Codecov Report

Merging #302 (fd48443) into main (ac2c383) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #302   +/-   ##
=======================================
  Coverage   95.36%   95.36%           
=======================================
  Files           4        4           
  Lines        1187     1187           
  Branches      334      334           
=======================================
  Hits         1132     1132           
  Misses         17       17           
  Partials       38       38           

Flag	Coverage Δ
unittests	95.36% <ø> (ø)

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Impacted Files	Coverage Δ
queue.c	99.23% <ø> (ø)

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[n9wxu]

At least the AVR examples have coroutines so closing this PR.