Remove -? to display help

It seems like `--help` and `-h` is good enough alternatives for getting the
help display.

Author: sourrust

src/flags.c

@@ -6,7 +6,7 @@
 #include "util.h"
 
 static const char* version_matches[] = {"-v", "--version", NULL};
-static const char* help_matches[]    = {"-h", "-?", "--help", NULL};
+static const char* help_matches[]    = {"-h", "--help", NULL};
 
 /* Print off the current version of laco */
 static void handle_version(LacoState* laco, const char** arguments) {
@@ -20,8 +20,8 @@ static void handle_version(LacoState* laco, const char** arguments) {
 static void handle_help(LacoState* laco, const char** arguments) {
   puts("A better REPL for Lua.\n");
   puts("Usage: laco [options]\n");
-  puts("-h | -? | --help   \tPrint this help screen");
-  puts("-v | --version     \tPrint current version");
+  puts("-h | --help      \tPrint this help screen");
+  puts("-v | --version   \tPrint current version");
 
   laco_kill(laco, 0, NULL);
 }