Simplify probes_seq_show() function. No change in output
before and after patch.

Link: http://lkml.kernel.org/r/20180315082756.9050-2-ravi.bangoria@linux.vnet.ibm.comAcked-by: NMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: NRavi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>