remove unused symlinks #221

Job	Run time
Code formatting	9s
Exercise Python examples on ubuntu-latest	1m 32s
Check Ruby Samples ubuntu-latest	1m 30s
Exercise Python examples on macos-latest	3m 45s
Check Ruby Samples macos-latest	2m 27s
Build Windows fetch	2m 46s
Build ubuntu-20.04 gcc os	48s
Build Windows vcpkg	7m 56s
Build ubuntu-20.04 gcc fetch	1m 32s
Build ubuntu-20.04 gcc vcpkg	4m 4s
Build ubuntu-20.04 clang os	56s
Build ubuntu-20.04 clang fetch	2m 37s
Build ubuntu-20.04 clang vcpkg	4m 36s
Build macos-latest gcc os	1m 59s
Build macos-latest gcc fetch	2m 44s
Build macos-latest gcc vcpkg	2m 28s
Build macos-latest clang os	2m 15s
Build macos-latest clang fetch	2m 36s
Build macos-latest clang vcpkg	1m 48s
	48m 28s

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