Remove some dead code.

src/SConscript

Index: src/SConscript
diff --git a/src/SConscript b/src/SConscript
index e5f4e323b6b038fb96c186c32426b4bb47281828..06ee907cbdb44e7b8fe6616a9099dc80a0303c96 100755
--- a/src/SConscript
+++ b/src/SConscript
@@ -87,7 +87,6 @@ SOURCES = {
     interpreter-irregexp.cc
     isolate.cc
     jsregexp.cc
-    jump-target.cc
     lithium-allocator.cc
     lithium.cc
     liveedit.cc
@@ -107,7 +106,6 @@ SOURCES = {
     regexp-macro-assembler-irregexp.cc
     regexp-macro-assembler.cc
     regexp-stack.cc
-    register-allocator.cc
     rewriter.cc
     runtime.cc
     runtime-profiler.cc
@@ -133,14 +131,11 @@ SOURCES = {
     v8threads.cc
     variables.cc
     version.cc
-    virtual-frame.cc
     zone.cc
     extensions/gc-extension.cc
     extensions/externalize-string-extension.cc
     """),
   'arch:arm': Split("""
-    jump-target-light.cc
-    virtual-frame-light.cc
     arm/builtins-arm.cc
     arm/code-stubs-arm.cc
     arm/codegen-arm.cc
@@ -152,20 +147,15 @@ SOURCES = {
     arm/frames-arm.cc
     arm/full-codegen-arm.cc
     arm/ic-arm.cc
-    arm/jump-target-arm.cc
     arm/lithium-arm.cc
     arm/lithium-codegen-arm.cc
     arm/lithium-gap-resolver-arm.cc
     arm/macro-assembler-arm.cc
     arm/regexp-macro-assembler-arm.cc
-    arm/register-allocator-arm.cc
     arm/stub-cache-arm.cc
-    arm/virtual-frame-arm.cc
     arm/assembler-arm.cc
     """),
   'arch:mips': Split("""
-    jump-target-light.cc
-    virtual-frame-light.cc
     mips/assembler-mips.cc
     mips/builtins-mips.cc
     mips/code-stubs-mips.cc
@@ -178,16 +168,11 @@ SOURCES = {
     mips/frames-mips.cc
     mips/full-codegen-mips.cc
     mips/ic-mips.cc
-    mips/jump-target-mips.cc
     mips/macro-assembler-mips.cc
     mips/regexp-macro-assembler-mips.cc
-    mips/register-allocator-mips.cc
     mips/stub-cache-mips.cc
-    mips/virtual-frame-mips.cc
     """),
   'arch:ia32': Split("""
-    jump-target-heavy.cc
-    virtual-frame-heavy.cc
     ia32/assembler-ia32.cc
     ia32/builtins-ia32.cc
     ia32/code-stubs-ia32.cc
@@ -199,19 +184,14 @@ SOURCES = {
     ia32/frames-ia32.cc
     ia32/full-codegen-ia32.cc
     ia32/ic-ia32.cc
-    ia32/jump-target-ia32.cc
     ia32/lithium-codegen-ia32.cc
     ia32/lithium-gap-resolver-ia32.cc
     ia32/lithium-ia32.cc
     ia32/macro-assembler-ia32.cc
     ia32/regexp-macro-assembler-ia32.cc
-    ia32/register-allocator-ia32.cc
     ia32/stub-cache-ia32.cc
-    ia32/virtual-frame-ia32.cc
     """),
   'arch:x64': Split("""
-    jump-target-heavy.cc
-    virtual-frame-heavy.cc
     x64/assembler-x64.cc
     x64/builtins-x64.cc
     x64/code-stubs-x64.cc
@@ -223,15 +203,12 @@ SOURCES = {
     x64/frames-x64.cc
     x64/full-codegen-x64.cc
     x64/ic-x64.cc
-    x64/jump-target-x64.cc
     x64/lithium-codegen-x64.cc
     x64/lithium-gap-resolver-x64.cc
     x64/lithium-x64.cc
     x64/macro-assembler-x64.cc
     x64/regexp-macro-assembler-x64.cc
-    x64/register-allocator-x64.cc
     x64/stub-cache-x64.cc
-    x64/virtual-frame-x64.cc
     """),
   'simulator:arm': ['arm/simulator-arm.cc'],
   'simulator:mips': ['mips/simulator-mips.cc'],