powerpc: Remove unused function trace_syscall()

[Michael Ellerman]

On Thu, 2015-19-11 at 03:26:28 UTC, Rashmica Gupta wrote:
> This function has been unused since commit 14cf11af6cf6 ("powerpc: Merge enough
> to start building in arch/powerpc."), so remove it.
> 
> Signed-off-by: Rashmica Gupta <rashmicy at gmail.com>
> Reviewed-by: Andrew Donnellan <andrew.donnellan at au1.ibm.com>
> Reviewed-by: Anshuman Khandual <khandual at linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/cdfc8ed6904d7b0c0ca23d61

cheers