Update process.c.v

Removing unnecesary `retun`s

vlib/os/process.c.v

@@ -14,7 +14,6 @@ pub fn (mut p Process) signal_kill() {
 	}
 	p._signal_kill()
 	p.status = .aborted
-	return
 }
 
 // signal_pgkill - kills the whole process group
@@ -23,7 +22,6 @@ pub fn (mut p Process) signal_pgkill() {
 		return
 	}
 	p._signal_pgkill()
-	return
 }
 
 // signal_stop - stops the process, you can resume it with p.signal_continue()
@@ -33,7 +31,6 @@ pub fn (mut p Process) signal_stop() {
 	}
 	p._signal_stop()
 	p.status = .stopped
-	return
 }
 
 // signal_continue - tell a stopped process to continue/resume its work
@@ -43,7 +40,6 @@ pub fn (mut p Process) signal_continue() {
 	}
 	p._signal_continue()
 	p.status = .running
-	return
 }
 
 // wait - wait for a process to finish.
@@ -60,7 +56,6 @@ pub fn (mut p Process) wait() {
 		return
 	}
 	p._wait()
-	return
 }
 
 // close - free the OS resources associated with the process.
@@ -132,7 +127,6 @@ pub fn (mut p Process) set_redirect_stdio() {
 	$if trace_process_pipes ? {
 		eprintln('${@LOCATION}, pid: ${p.pid}, status: ${p.status}')
 	}
-	return
 }
 
 // stdin_write will write the string `s`, to the stdin pipe of the child process.
@@ -323,5 +317,4 @@ pub fn (mut p Process) run() {
 		return
 	}
 	p._spawn()
-	return
 }