Removed files related to cross-compilation.

I had a ton of issues related to cross-compilation (libraries not found, clashing function
names with raylib, improper linking), and I realized that it's too much work to cross-compile,
_and_ I'm using a build system. Instead, I'm probably just going to use my Windows VM to compile for Windows.
I still haven't decided what to do for Mac, though.

meson.build

@@ -4,13 +4,6 @@ add_global_arguments('-g', '-Wall', '-pedantic', '-Wno-unused-function', '-Werro
 raylib = dependency('raylib', native: true)
 static_lib_path = ''
 
-if meson.is_cross_build()
-	add_project_link_arguments('-L /usr/x86_64-w64-mingw32/lib/', '-lws2_32', '-lwinmm', '-I/usr/x86_64-w64-mingw32/include', language: ['c', 'cpp'])
-	raylib = declare_dependency(
-		link_args: ['-lraylib'],
-		include_directories: include_directories('/usr/x86_64-w64-mingw32/include/'))
-endif
-
 executable('pong', 
 	'main.cpp', 'easysock.cpp', 'sock.cpp','paddle.cpp', 'ball.cpp', 'numeric_base.cpp', 'connect_code.cpp', 'server.cpp', 'client.cpp',
 	'serialization.c',