removed some more unnecessary code

- delete unnecessary call to get WallpaperManager
- remove two unused methods
diff --git a/src/com/android/launcher2/CellLayout.java b/src/com/android/launcher2/CellLayout.java
index cf82abb..af2f984 100644
--- a/src/com/android/launcher2/CellLayout.java
+++ b/src/com/android/launcher2/CellLayout.java
@@ -797,18 +797,6 @@
     }
 
     /**
-     * Check if the row 'y' is empty from columns 'left' to 'right', inclusive.
-     */
-    private static boolean isRowEmpty(int y, int left, int right, boolean[][] occupied) {
-        for (int x = left; x <= right; x++) {
-            if (occupied[x][y]) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    /**
      * Given a point, return the cell that strictly encloses that point
      * @param x X coordinate of the point
      * @param y Y coordinate of the point
@@ -1042,24 +1030,6 @@
         }
     }
 
-    private boolean isVacantIgnoring(
-            int originX, int originY, int spanX, int spanY, View ignoreView) {
-        if (ignoreView != null) {
-            markCellsAsUnoccupiedForView(ignoreView);
-        }
-        boolean isVacant = true;
-        for (int i = 0; i < spanY; i++) {
-            if (!isRowEmpty(originY + i, originX, originX + spanX - 1, mOccupied)) {
-                isVacant = false;
-                break;
-            }
-        }
-        if (ignoreView != null) {
-            markCellsAsOccupiedForView(ignoreView);
-        }
-        return isVacant;
-    }
-
     public View getChildAt(int x, int y) {
         final int count = getChildCount();
         for (int i = 0; i < count; i++) {
diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java
index a25db39..c81d254 100644
--- a/src/com/android/launcher2/Workspace.java
+++ b/src/com/android/launcher2/Workspace.java
@@ -599,9 +599,6 @@
     }
 
     protected void setWallpaperDimension() {
-        WallpaperManager wpm =
-            (WallpaperManager) mLauncher.getSystemService(Context.WALLPAPER_SERVICE);
-
         Display display = mLauncher.getWindowManager().getDefaultDisplay();
         final int maxDim = Math.max(display.getWidth(), display.getHeight());
         final int minDim = Math.min(display.getWidth(), display.getHeight());
@@ -610,7 +607,7 @@
         // parallax effects
         mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim));
         mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim));
-        wpm.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight);
+        mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight);
     }
 
     public void setVerticalWallpaperOffset(WallpaperVerticalOffset offsetPosition) {