Remove the fledgling Thumb2 support since we are concentrating...

SConstruct

Index: SConstruct
===================================================================
--- SConstruct	(revision 4694)
+++ SConstruct	(working copy)
@@ -210,12 +210,6 @@
       'CCFLAGS':      ['-m32', '-DCAN_USE_UNALIGNED_ACCESSES=1'],
       'LINKFLAGS':    ['-m32']
     },
-    'armvariant:thumb2': {
-      'CPPDEFINES':   ['V8_ARM_VARIANT_THUMB']
-    },
-    'armvariant:arm': {
-      'CPPDEFINES':   ['V8_ARM_VARIANT_ARM']
-    },
     'arch:mips': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_MIPS'],
       'simulator:none': {
@@ -765,11 +759,6 @@
     'default': 'hidden',
     'help': 'shared library symbol visibility'
   },
-  'armvariant': {
-    'values': ['arm', 'thumb2', 'none'],
-    'default': 'none',
-    'help': 'generate thumb2 instructions instead of arm instructions (default)'
-  },
   'pgo': {
     'values': ['off', 'instrument', 'optimize'],
     'default': 'off',
@@ -963,10 +952,6 @@
     if 'msvcltcg' in ARGUMENTS:
       print "Warning: forcing msvcltcg on as it is required for pgo (%s)" % options['pgo']
     options['msvcltcg'] = 'on'
-  if (options['armvariant'] == 'none' and options['arch'] == 'arm'):
-    options['armvariant'] = 'arm'
-  if (options['armvariant'] != 'none' and options['arch'] != 'arm'):
-    options['armvariant'] = 'none'
   if options['arch'] == 'mips':
     if ('regexp' in ARGUMENTS) and options['regexp'] == 'native':
       # Print a warning if native regexp is specified for mips