Revert "save/load/removeを追加 Impl WIP"

This reverts commit 1eee31316a.

source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java

@@ -2,7 +2,6 @@ package one.nem.lacerta.source.file.impl;
 
 import android.graphics.Bitmap;
 
-import java.io.File;
 import java.io.IOException;
 import java.nio.file.DirectoryStream;
 import java.nio.file.Files;
@@ -86,7 +85,6 @@ public class FileManagerImpl implements FileManager {
 
     @Override
     public void saveBitmap(Path path, Bitmap bitmap) {
-
     }
 
     @Override
@@ -98,16 +96,4 @@ public class FileManagerImpl implements FileManager {
     public void removeBitmap(Path path) {
 
     }
-
-    private void saveFile(File file) {
-        // Internal
-    }
-
-    private void loadFile(File file) {
-        // Internal
-    }
-
-    private void removeFile(File file) {
-        // Internal
-    }
 }