[Interpreter] Add a simple dead-code elimination bytecode optimizer.

test/cctest/interpreter/bytecode_expectations/TryCatch.golden

 #
 # Autogenerated by generate-bytecode-expectations.
 #
 
 ---
 pool type: string
 execute: yes
 wrap: yes
 
 ---
 snippet: "
   try { return 1; } catch(e) { return 2; }
 "
 frame size: 5
 parameter count: 1
-bytecode array length: 43
+bytecode array length: 41
 bytecodes: [
   /*   30 E> */ B(StackCheck),
                 B(Mov), R(context), R(1),
   /*   40 S> */ B(LdaSmi), U8(1),
   /*   75 S> */ B(Return),
-                B(Jump), U8(34),
+                B(Jump), U8(32),
                 B(Star), R(3),
                 B(LdaConstant), U8(0),
                 B(Star), R(2),
                 B(Mov), R(closure), R(4),
                 B(CallRuntime), U16(Runtime::kPushCatchContext), R(2), U8(3),
                 B(Star), R(1),
                 B(CallRuntime), U16(Runtime::kInterpreterClearPendingMessage), R(0), U8(0),
                 B(Ldar), R(1),
                 B(PushContext), R(0),
   /*   63 S> */ B(LdaSmi), U8(2),
                 B(PopContext), R(0),
   /*   75 S> */ B(Return),
-                B(PopContext), R(0),
                 B(LdaUndefined),
   /*   75 S> */ B(Return),
 ]
 constant pool: [
   "e",
 ]
 handlers: [
   [4, 7, 9],
 ]
 
@@ skipping 43 matching lines @@
 ]
 constant pool: [
   "e1",
   "e2",
 ]
 handlers: [
   [4, 8, 10],
   [40, 44, 46],
 ]