[turbofan] Rip out the unused OsrGuard node.

src/compiler/verifier.cc

Index: src/compiler/verifier.cc
diff --git a/src/compiler/verifier.cc b/src/compiler/verifier.cc
index 2ba9ebbe0b13cb6d0cf717b7edfc910da791cc59..bc80206d2def092c346e3f9515679592be11cc4b 100644
--- a/src/compiler/verifier.cc
+++ b/src/compiler/verifier.cc
@@ -401,23 +401,6 @@ void Verifier::Visitor::Check(Node* node) {
       // Type is merged from other values in the graph and could be any.
       CheckTypeIs(node, Type::Any());
       break;
-    case IrOpcode::kOsrGuard:
-      // OSR values have a value and a control input.
-      CHECK_EQ(1, value_count);
-      CHECK_EQ(1, effect_count);
-      CHECK_EQ(1, control_count);
-      switch (OsrGuardTypeOf(node->op())) {
-        case OsrGuardType::kUninitialized:
-          CheckTypeIs(node, Type::None());
-          break;
-        case OsrGuardType::kSignedSmall:
-          CheckTypeIs(node, Type::SignedSmall());
-          break;
-        case OsrGuardType::kAny:
-          CheckTypeIs(node, Type::Any());
-          break;
-      }
-      break;
     case IrOpcode::kProjection: {
       // Projection has an input that produces enough values.
       int index = static_cast<int>(ProjectionIndexOf(node->op()));