remove unused stuff #886

Job	Run time
Clean up previous branch jobs	12s
Package builder app	4s
Unit Tests	9s
release_notes (aws-crt-python)	33s
compilers (clang-9)	48s
release_notes (aws-iot-device-sdk-python-v2)	5s
compilers (clang-10)	33s
Sanity Test (ubuntu-22.04)	1m 47s
compilers (clang-11)	31s
cross_compile (linux-armv6)	10m 9s
Sanity Test (macos-11)	2m 48s
compilers (gcc-7)	33s
Sanity Test (macos-12)	3m 17s
cross_compile (linux-armv7)	10m 17s
compilers (gcc-8)	31s
aws-c-cal (manylinux1-x86)	2m 11s
Sanity Test (windows-2022)	2m 40s
cross_compile (linux-armv8)	9m 49s
aws-c-cal (manylinux1-x64)	2m 19s
compilers (gcc-9)	29s
aws-c-cal (manylinux2014-x86)	2m 39s
compilers (gcc-10)	25s
aws-c-cal (manylinux2014-x64)	2m 42s
compilers (gcc-11)	40s
aws-c-cal (manylinux2014-aarch64)	22m 10s
swift (swift-5-ubuntu-x64)	46s
aws-c-cal (musllinux-1-1-aarch64)	24m 57s
downstream (aws-c-mqtt)	9m 38s
swift (swift-5-centos-x64)	43s
aws-c-cal (musllinux-1-1-x64)	2m 37s
downstream (aws-c-http)	2m 35s
swift (swift-5-al2-x64)	45s
downstream (aws-crt-python)	4m 41s
downstream (aws-crt-cpp)	4m 55s
downstream (aws-crt-java)	7m 52s
downstream (aws-crt-nodejs)	4m 52s
std-compat (gcc-8, c++11)	5m 47s
std-compat (gcc-8, c++14)	7m 1s
std-compat (gcc-8, c++17)	5m 7s
std-compat (gcc-8, c++2a)	5m 43s
std-compat (clang-9, c++11)	5m 54s
std-compat (clang-9, c++14)	5m 31s
std-compat (clang-9, c++17)	6m 33s
std-compat (clang-9, c++2a)	5m 25s
All Sanity Tests passed	1s
	3h 9m 44s

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