Merge pull request #4934 from per1234/remove-libopus

Remove "libopus"

Author: umbynos

registry.txt

@@ -7328,7 +7328,6 @@ https://github.com/pschatzmann/arduino-fdk-aac.git|Contributed|fdk-aac
 https://github.com/pschatzmann/arduino-libflac.git|Contributed|libflac
 https://github.com/pschatzmann/arduino-liblame.git|Contributed|libLAME
 https://github.com/pschatzmann/arduino-libmad.git|Contributed|libMAD
-https://github.com/pschatzmann/arduino-libopus.git|Contributed|libopus
 https://github.com/pschatzmann/arduino-libsbc.git|Contributed|libsbc
 https://github.com/lhtran114/OnlyTimer.git|Contributed|OnlyTimer
 https://github.com/sinricpro/arduino-renesas-sdk.git|Contributed|SinricPro_Renesas