Remove now-unused kIllegalBytecode bailout reason.

R=mstarzinger@chromium.org, oth@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1988573003
Cr-Commit-Position: refs/heads/master@{#36281}

src/bailout-reason.h

@@ -91,7 +91,6 @@ namespace internal {
   V(kGraphBuildingFailed, "Optimized graph construction failed")               \
   V(kHeapNumberMapRegisterClobbered, "HeapNumberMap register clobbered")       \
   V(kHydrogenFilter, "Optimization disabled by filter")                        \
-  V(kIllegalBytecode, "Illegal bytecode")                                      \
   V(kImportDeclaration, "Import declaration")                                  \
   V(kIndexIsNegative, "Index is negative")                                     \
   V(kIndexIsTooLarge, "Index is too large")                                    \

test/cctest/interpreter/bytecode_expectations/Generators.golden

@@ -24,7 +24,7 @@ bytecodes: [
                 B(LdaZero),
                 B(TestEqualStrict), R(1),
                 B(JumpIfTrue), U8(57),
-                B(LdaSmi), U8(80),
+                B(LdaSmi), U8(79),
                 B(Star), R(2),
                 B(CallRuntime), U16(Runtime::kAbort), R(2), U8(1),
                 B(CallRuntime), U16(Runtime::kNewFunctionContext), R(closure), U8(1),
@@ -133,7 +133,7 @@ bytecodes: [
                 B(LdaSmi), U8(1),
                 B(TestEqualStrict), R(1),
                 B(JumpIfTrueConstant), U8(0),
-                B(LdaSmi), U8(80),
+                B(LdaSmi), U8(79),
                 B(Star), R(2),
                 B(CallRuntime), U16(Runtime::kAbort), R(2), U8(1),
                 B(CallRuntime), U16(Runtime::kNewFunctionContext), R(closure), U8(1),
@@ -283,7 +283,7 @@ bytecodes: [
                 B(LdaSmi), U8(1),
                 B(TestEqualStrict), R(3),
                 B(JumpIfTrueConstant), U8(3),
-                B(LdaSmi), U8(80),
+                B(LdaSmi), U8(79),
                 B(Star), R(4),
                 B(CallRuntime), U16(Runtime::kAbort), R(4), U8(1),
                 B(CallRuntime), U16(Runtime::kNewFunctionContext), R(closure), U8(1),
@@ -355,7 +355,7 @@ bytecodes: [
                 B(LdaSmi), U8(1),
                 B(TestEqualStrict), R(3),
                 B(JumpIfTrueConstant), U8(9),
-                B(LdaSmi), U8(80),
+                B(LdaSmi), U8(79),
                 B(Star), R(11),
                 B(CallRuntime), U16(Runtime::kAbort), R(11), U8(1),
   /*   27 S> */ B(LdaContextSlot), R(1), U8(7),