Bryan Boreham b8e5b7cda9 [REFACTOR] PromQL: remove label_join and label_replace stubs
These functions operate on whole series, not on samples, so they do not
fit into the table of functions that return a Vector. Remove the stub
entries that were left to help downstream users of the code identify
what changed.

We cannot remove the entries from the `FunctionCalls` map without
breaking `TestFunctionList`, so put some nils in to keep it happy.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-09-27 11:20:45 +01:00
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