tracing: remove dangling semicolon

Due to a cut and paste error, the trace_seq_putc had a semicolon
after the prototype but before the stub function when tracing is
disabled.

[Impact: fix compile error ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

include/linux/trace_seq.h

@@ -63,7 +63,7 @@ static inline int trace_seq_puts(struct trace_seq *s, const char *str)
 {
 	return 0;
 }
-static inline int trace_seq_putc(struct trace_seq *s, unsigned char c);
+static inline int trace_seq_putc(struct trace_seq *s, unsigned char c)
 {
 	return 0;
 }