Remove some of the go specific C bindings for debug info now that they've been migrated into the main C API.
Remove some of the go specific C bindings for debug info now that they've been migrated into the main C API.

Fixes a go bindings breakage after r317135.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@317151 91177308-0d34-0410-b5e6-96231b3b80d8

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