Remove explicit inliner setting override

Author: mdedetrich

Diff for: build.sbt

@@ -21,9 +21,6 @@ ThisBuild / reproducibleBuildsCheckResolver := Resolver.ApacheMavenStagingRepo
 
 ThisBuild / pekkoCoreProject := true
 
-// pekkoInlineEnabled must be set to false when this is backported to 1.0.x branch
-ThisBuild / pekkoInlineEnabled := true
-
 enablePlugins(
   UnidocRoot,
   UnidocWithPrValidation,