cgxb4: remove duplicate include in cxgb4.h
cgxb4: remove duplicate include in cxgb4.h

Reported by "make includecheck"

Tested that C sources including this file still compile well on x86

Signed-off-by: Michael Opdenacker <7a431b534449ead06bb4128c8239bba232a2bf74@free-electrons.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs