Remove redundant DeprecationLevel.Warning.

Author: timward60

src/main/kotlin/graphql/kickstart/tools/SchemaParserOptions.kt

@@ -92,7 +92,7 @@ data class SchemaParserOptions internal constructor(
  this.allowUnimplementedResolvers = allowUnimplementedResolvers
  }
 
- @Deprecated("Use missingResolverDataFetcherProvider instead.", level = DeprecationLevel.WARNING)
+ @Deprecated("Use missingResolverDataFetcherProvider instead.")
  fun missingResolverDataFetcher(missingResolverDataFetcher: DataFetcher<Any?>?) = this.apply {
  this.missingResolverDataFetcher = missingResolverDataFetcher
  }