Update Kaleidoscope: Change headers

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D88141

llvm/examples/Kaleidoscope/Chapter2/toy.cpp

@@ -1,11 +1,10 @@
-#include "llvm/ADT/STLExtras.h"
-#include <algorithm>
 #include <cctype>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
+#include <utility>
 #include <vector>
 
 //===----------------------------------------------------------------------===//
@@ -300,8 +299,8 @@ static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
     }
 
     // Merge LHS/RHS.
-    LHS = std::make_unique<BinaryExprAST>(BinOp, std::move(LHS),
-                                           std::move(RHS));
+    LHS =
+        std::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
   }
 }
 
@@ -357,7 +356,7 @@ static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
   if (auto E = ParseExpression()) {
     // Make an anonymous proto.
     auto Proto = std::make_unique<PrototypeAST>("__anon_expr",
-                                                 std::vector<std::string>());
+                                                std::vector<std::string>());
     return std::make_unique<FunctionAST>(std::move(Proto), std::move(E));
   }
   return nullptr;