Delete legacy stuff from tests folder

tests/hello.lua

@@ -1,10 +0,0 @@
--- hello.lua
--- Receives a table, returns the sum of its components.
-io.write("The table the script received has:\n");
-x = 0
-for i = 1, #foo do
-  print(i, foo[i])
-  x = x + foo[i]
-end
-io.write("Returning data back to C\n");
-return x

tests/script.cpp

@@ -1,78 +0,0 @@
-#include "lua.hpp"
-#include <stdio.h>
-#include <stdlib.h>
-
-int main ()
-{
-    int status, result, i;
-    double sum;
-    lua_State *L;
-
-    /*
-     * All Lua contexts are held in this structure. We work with it almost
-     * all the time.
-     */
-    L = luaL_newstate();
-
-    luaL_openlibs(L); /* Load Lua libraries */
-
-    /* Load the file containing the script we are going to run */
-    status = luaL_loadfile(L, "hello.lua");
-
-    if (status) 
-    {
-        /* If something went wrong, error message is at the top of */
-        /* the stack */
-        fprintf(stderr, "Couldn't load file: %s\n", lua_tostring(L, -1));
-        exit(1);
-    }
-
-    /*
-     * Ok, now here we go: We pass data to the lua script on the stack.
-     * That is, we first have to prepare Lua's virtual stack the way we
-     * want the script to receive it, then ask Lua to run it.
-     */
-    lua_newtable(L);    /* We will pass a table */
-
-    /*
-     * To put values into the table, we first push the index, then the
-     * value, and then call lua_rawset() with the index of the table in the
-     * stack. Let's see why it's -3: In Lua, the value -1 always refers to
-     * the top of the stack. When you create the table with lua_newtable(),
-     * the table gets pushed into the top of the stack. When you push the
-     * index and then the cell value, the stack looks like:
-     *
-     * <- [stack bottom] -- table, index, value [top]
-     *
-     * So the -1 will refer to the cell value, thus -3 is used to refer to
-     * the table itself. Note that lua_rawset() pops the two last elements
-     * of the stack, so that after it has been called, the table is at the
-     * top of the stack.
-     */
-    for (i = 1; i <= 5; i++) 
-    {
-        lua_pushnumber(L, i);   /* Push the table index */
-        lua_pushnumber(L, i*2); /* Push the cell value */
-        lua_rawset(L, -3);      /* Stores the pair in the table */
-    }
-
-    /* By what name is the script going to reference our table? */
-    lua_setglobal(L, "foo");
-
-    /* Ask Lua to run our little script */
-    result = lua_pcall(L, 0, LUA_MULTRET, 0);
-    if (result) {
-        fprintf(stderr, "Failed to run script: %s\n", lua_tostring(L, -1));
-        exit(1);
-    }
-
-    /* Get the returned value at the top of the stack (index -1) */
-    sum = lua_tonumber(L, -1);
-
-    printf("Script returned: %.0f\n", sum);
-
-    lua_pop(L, 1);  /* Take the returned value out of the stack */
-    lua_close(L);   /* Cya, Lua */
-
-    return 0;
-}