Updates the generated bazel targets for burn-in to exclude the test being run from the target's `data` attribute, if present.

The generated target is changed like:
```diff
resmoke_suite_test(
name = "no_passthrough_burn_in_jstests_foo.js",
srcs = [
"//jstests/foo.js",
],
data = [

• "//jstests/foo.js",
  "//some/other:dependency",
  ],
  ```

The resmoke_suite_test rule combines `data` and `srcs` internally, and bazel disallows duplicate labels in an attribute.