[interpreter] Don't keep postfix result if only visited for effect

test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden

Index: test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden b/test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden
index f7c17db4fbac1a45028fbc9beb61c2091f279370..d22e5ec8360f099af7e34a9655d731ea85c8d5f4 100644
--- a/test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden
+++ b/test/cctest/interpreter/bytecode_expectations/JumpsRequiringConstantWideOperands.golden
@@ -327,9 +327,9 @@ snippet: "
   }
   return 3;
 "
-frame size: 3
+frame size: 2
 parameter count: 1
-bytecode array length: 1409
+bytecode array length: 1407
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaConstant), U8(0),
@@ -960,7 +960,7 @@ bytecodes: [
                 B(Star), R(1),
   /* 4108 S> */ B(LdaSmi), U8(3),
   /* 4108 E> */ B(TestLessThan), R(1),
-                B(Wide), B(JumpIfFalse), U16(37),
+                B(Wide), B(JumpIfFalse), U16(35),
   /* 4090 E> */ B(StackCheck),
   /* 4122 S> */ B(LdaSmi), U8(1),
   /* 4128 E> */ B(TestEqual), R(1),
@@ -969,12 +969,11 @@ bytecodes: [
   /* 4146 S> */ B(LdaSmi), U8(2),
   /* 4152 E> */ B(TestEqual), R(1),
                 B(Wide), B(JumpIfFalse), U16(7),
-  /* 4158 S> */ B(Wide), B(Jump), U16(12),
+  /* 4158 S> */ B(Wide), B(Jump), U16(10),
   /* 4114 S> */ B(Ldar), R(1),
-                B(ToNumber), R(2),
                 B(Inc),
                 B(Star), R(1),
-                B(Jump), U8(-40),
+                B(Jump), U8(-38),
   /* 4167 S> */ B(LdaSmi), U8(3),
   /* 4177 S> */ B(Return),
 ]