Delete old x86 validator.

src/trusted/validator_x86/testdata/64/test_alias.test

-@hex:
-  
-  # For background, see:
-  # http://code.google.com/p/nativeclient/issues/detail?id=2574
-  
-  # "f6 /0" encoding of TEST.  This is what assemblers generate.
-  f6 c3 00
-  
-  # "f6 /1" encoding of TEST.  This is an alias encoding, which we
-  # should disallow on the grounds of minimalism.
-  f6 cb 00
-  
-  # The same applies to the "f7" versions of TEST.
-  f7 c3 00 00 00 00
-  f7 cb 00 00 00 00
-@val:
-  VALIDATOR: 0000000000000003: f6 cb 00                                     test %bl, 0x0
-  VALIDATOR: ERROR: This instruction has been marked illegal by Native Client
-  VALIDATOR: 000000000000000c: f7 cb 00 00 00 00                            test %ebx, 0x0
-  VALIDATOR: ERROR: This instruction has been marked illegal by Native Client
-  VALIDATOR: Checking jump targets: 0 to 12
-  VALIDATOR: Checking that basic blocks are aligned
-  *** <input> IS UNSAFE ***
-@rval:
-  VALIDATOR: 0000000000000003: f6 cb 00                                     test %bl, 0x0
-  VALIDATOR: ERROR: This instruction has been marked illegal by Native Client
-  VALIDATOR: 000000000000000c: f7 cb 00 00 00 00                            test %ebx, 0x0
-  VALIDATOR: ERROR: This instruction has been marked illegal by Native Client
-  VALIDATOR: Checking jump targets: 0 to 12
-  VALIDATOR: Checking that basic blocks are aligned
-  *** <input> IS UNSAFE ***
-@dis:
-  0000000000000000: f6 c3 00                                     test %bl, 0x0
-  0000000000000003: f6 cb 00                                     test %bl, 0x0
-  0000000000000006: f7 c3 00 00 00 00                            test %ebx, 0x0
-  000000000000000c: f7 cb 00 00 00 00                            test %ebx, 0x0
-@rdfa_output:
-  3: [0] unrecognized instruction
-  c: [1] unrecognized instruction
-  return code: 1