avoid deleteRecursively(), using FileSystemOperations instead

Author: dconeybe

firebase-dataconnect/gradleplugin/plugin/src/main/kotlin/com/google/firebase/dataconnect/gradle/plugin/DataConnectExecutableDownloadTask.kt

@@ -69,7 +69,7 @@ abstract class DataConnectExecutableDownloadTask : DefaultTask() {
     logger.info("outputFile: {}", outputFile)
 
     logger.info("Deleting build directory: {}", buildDirectory)
-    buildDirectory.deleteRecursively()
+    fileSystemOperations.delete { it.delete(buildDirectory) }
 
     if (inputFile !== null && version !== null) {
       throw DataConnectGradleException(

firebase-dataconnect/gradleplugin/plugin/src/main/kotlin/com/google/firebase/dataconnect/gradle/plugin/DataConnectGenerateCodeTask.kt

@@ -81,11 +81,6 @@ abstract class DataConnectGenerateCodeTask : DefaultTask() {
     logger.info("outputDirectory={}", outputDirectory.absolutePath)
     logger.info("ktfmtJarFile={}", ktfmtJarFile?.absolutePath)
 
-    if (outputDirectory.exists()) {
-      logger.info("Deleting directory: $outputDirectory")
-      outputDirectory.deleteRecursively()
-    }
-
     if (configDirectory === null) {
       logger.info("No Data Connect config directories found; nothing to do")
       return

firebase-dataconnect/gradleplugin/plugin/src/main/kotlin/com/google/firebase/dataconnect/gradle/plugin/DataConnectMergeConfigDirectoriesTask.kt

@@ -63,7 +63,7 @@ abstract class DataConnectMergeConfigDirectoriesTask : DefaultTask() {
     logger.info("mergedDirectory: {}", mergedDirectory?.absolutePath)
 
     logger.info("Deleting build directory: {}", buildDirectory)
-    buildDirectory.deleteRecursively()
+    fileSystemOperations.delete { it.delete(buildDirectory) }
 
     val configDirectories =
       buildList {