rm -rf engine/ (moving to repository root)

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

engine/build.zig

@@ -1,14 +0,0 @@
-const Builder = @import("std").build.Builder;
-
-pub fn build(b: *Builder) void {
-    const mode = b.standardReleaseOptions();
-    const lib = b.addStaticLibrary("engine", "src/main.zig");
-    lib.setBuildMode(mode);
-    lib.install();
-
-    var main_tests = b.addTest("src/main.zig");
-    main_tests.setBuildMode(mode);
-
-    const test_step = b.step("test", "Run library tests");
-    test_step.dependOn(&main_tests.step);
-}

engine/src/main.zig

@@ -1,10 +0,0 @@
-const std = @import("std");
-const testing = std.testing;
-
-export fn add(a: i32, b: i32) i32 {
-    return a + b;
-}
-
-test "basic add functionality" {
-    try testing.expect(add(3, 7) == 10);
-}