Delete old x86 validator.

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

Index: src/trusted/validator_x86/testdata/64/jump_underflow.test
diff --git a/src/trusted/validator_x86/testdata/64/jump_underflow.test b/src/trusted/validator_x86/testdata/64/jump_underflow.test
deleted file mode 100644
index f1aaf1b81a00ece89c70eba9126f73ec095dd7f3..0000000000000000000000000000000000000000
--- a/src/trusted/validator_x86/testdata/64/jump_underflow.test
+++ /dev/null
@@ -1,24 +0,0 @@
-@hex:
-  # Jump backwards a long way, potentially outside of the sandbox's address space.
-  e9 fb ff ff bf
-@val:
-  VALIDATOR: Checking jump targets: 0 to 5
-  VALIDATOR: Checking that basic blocks are aligned
-  *** <input> is safe ***
-@rval:
-  VALIDATOR: Checking jump targets: 0 to 5
-  VALIDATOR: Checking that basic blocks are aligned
-  *** <input> is safe ***
-@rvald:
-  VALIDATOR: Checking block alignment and jump targets: 0 to 5
-  *** <input> is safe ***
-@vd-rval:
-  VALIDATOR: Checking jump targets: 0 to 5
-  VALIDATOR: Checking that basic blocks are aligned
-  *** <input> is safe ***
-@dis:
-  0000000000000000: e9 fb ff ff bf                               jmp 0xffffffffc0000000
-@vdis:
-  0000000000000000: e9 fb ff ff bf                               [P] dontcarejump %rip (s), 0xffffffffc0000000 (u)
-@rdfa_output:
-  return code: 0