[infra] Fix deadcode check target

Summary:
Some functions exposed in ScubaLogging interface were not
used outside of ScubaLogging and caused deadcode to fail.

Reviewed By: ngorogiannis

Differential Revision: D15964204

fbshipit-source-id: d823dbf8b

infer/src/scuba/ScubaLogging.mli

@@ -20,10 +20,6 @@ open! IStd
 val log_count : label:string -> value:int -> unit
 (** Log anything that can be counted. Events will be prefixed with "count." *)
 
-val log_many : LogEntry.t list -> unit
-
-val log_one : LogEntry.t -> unit
-
 val execute_with_time_logging : string -> (unit -> 'a) -> 'a
 (**
     A helper to log execution time of a particular function.
@@ -35,6 +31,4 @@ val execute_with_time_logging : string -> (unit -> 'a) -> 'a
     |}
  *)
 
-val flush_log_events : unit -> unit
-
 val register_global_log_flushing_at_exit : unit -> unit