[OE-core] [PATCH] site: Remove sctp related configs

They are preventing autotools from checking netinet/sctp.h existence successfuly which in turn makes configure.ac files with lines similar to this to fail, even if DEPENDS="lksctp-tools" and netinet/sctp.h is clearly available under recipe-sysroot/:

[OE-core] [PATCH] site: Remove sctp related configs

They are preventing autotools from checking netinet/sctp.h existence successfuly which in turn makes configure.ac files with lines similar to this to fail, even if DEPENDS="lksctp-tools" and netinet/sctp.h is clearly available under recipe-sysroot/: