Remove branch checker for now

Nub.Lang/Nub.Lang/Branching/BranchChecker.cs

@@ -1,32 +0,0 @@
-using Nub.Lang.Parsing;
-
-namespace Nub.Lang.Branching;
-
-public class BranchChecker
-{
-    private readonly IReadOnlyCollection<DefinitionNode> _definitions;
-
-    public BranchChecker(IReadOnlyCollection<DefinitionNode> definitions)
-    {
-        _definitions = definitions;
-    }
-
-    public void Check()
-    {
-        foreach (var funcDefinition in _definitions.OfType<LocalFuncDefinitionNode>())
-        {
-            if (funcDefinition.ReturnType.HasValue)
-            {
-                CheckBlock(funcDefinition.Body);
-            }
-        }
-    }
-
-    private void CheckBlock(BlockNode block)
-    {
-        if (!block.Statements.Any(s => s is ReturnNode))
-        {
-            throw new Exception("Block must contain a return statement");
-        }
-    }
-}

Nub.Lang/Nub.Lang/Program.cs

@@ -1,5 +1,4 @@
-using Nub.Lang.Branching;
+using Nub.Lang.Generation;
-using Nub.Lang.Generation;
 using Nub.Lang.Lexing;
 using Nub.Lang.Parsing;
 using Nub.Lang.Typing;
@@ -15,9 +14,6 @@ var definitions = parser.Parse();
 var typer = new ExpressionTyper(definitions);
 typer.Populate();
 
-var branchChecker = new BranchChecker(definitions);
-branchChecker.Check();
-
 var generator = new Generator(definitions);
 var asm = generator.Generate();