Cleanup: apply "Convert lambda to reference"

jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt

@@ -431,7 +431,7 @@ class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR) {
         if (IncrementalCompilation.isEnabled()) {
             for (target in chunk.targets) {
                 val cache = incrementalCaches[target]!!
-                val removedAndDirtyFiles = filesToCompile[target] + dirtyFilesHolder.getRemovedFiles(target).map { File(it) }
+                val removedAndDirtyFiles = filesToCompile[target] + dirtyFilesHolder.getRemovedFiles(target).map(::File)
                 cache.markOutputClassesDirty(removedAndDirtyFiles)
             }
         }

jps-plugin/src/org/jetbrains/kotlin/jps/incremental/JpsIncrementalCacheImpl.kt

@@ -66,7 +66,7 @@ class JpsIncrementalCacheImpl(
             }
         }
 
-        return result.map { File(it) }
+        return result.map(::File)
     }
 
     fun cleanDirtyInlineFunctions() {