perf inject: Remove unused 'input_name' static var

If we ever want to allow inject to work with something other than stdin,
we can put it back, but so far it is completely unused, so ditch it.

Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: acmel

tools/perf/builtin-inject.c

@@ -14,7 +14,6 @@
 
 #include "util/parse-options.h"
 
-static char		const *input_name = "-";
 static bool		inject_build_ids;
 
 static int perf_event__repipe_synth(struct perf_tool *tool __maybe_unused,
@@ -245,7 +244,7 @@ static int __cmd_inject(void)
 		perf_inject.tracing_data = perf_event__repipe_tracing_data;
 	}
 
-	session = perf_session__new(input_name, O_RDONLY, false, true, &perf_inject);
+	session = perf_session__new("-", O_RDONLY, false, true, &perf_inject);
 	if (session == NULL)
 		return -ENOMEM;