diff --git a/libguac/include/hash.h b/libguac/include/hash.h
index c17cc2b8..312a05f1 100644
--- a/libguac/include/hash.h
+++ b/libguac/include/hash.h
@@ -41,91 +41,6 @@
 
 #include <cairo/cairo.h>
 
-/**
- * A wrapper for a Cairo surface which allows fast image queries (linear time
- * in the size of the query image). Given an arbitrary input image, the first
- * occurence of that image within the contained surface can be found quickly.
- */
-typedef struct guac_indexed_surface {
-
-    /**
-     * The Cairo surface which is indexed.
-     */
-    cairo_surface_t* surface;
-
-} guac_indexed_surface;
-
-typedef struct guac_indexed_surface_subimage {
-
-    /**
-     * The indexed surface this subimage is a part of.
-     */
-    guac_indexed_surface* surface;
-
-    /**
-     * The X coordinate of the upper-left point of the rectangle
-     * of the subimage.
-     */
-    int x;
-
-    /**
-     * The Y coordinate of the upper-left point of the rectangle
-     * of the subimage.
-     */
-    int y;
-
-    /**
-     * The width of the subimage in pixels.
-     */
-    int width;
-
-    /**
-     * The height of the subimage in pixels.
-     */
-    int height;
-
-} guac_indexed_surface_subimage;
-
-/**
- * Creates a new indexed surface, using the given surface as the image data
- * source. The given surface will be made searchable such that queries of
- * images which are at least the given width and height can be resolved
- * quickly.
- *
- * @param surface The Cairo surface to index.
- * @param min_width The minimum image width to allow for queries.
- * @param min_height The minimum image height to allow for queries.
- * @return A newly allocated guac_indexed_surface.
- */
-guac_indexed_surface* guac_indexed_surface_alloc(cairo_surface_t* surface,
-        int min_width, int min_height);
-
-/**
- * Frees the given indexed surface.
- *
- * @param surface The guac_indexed_surface to free.
- */
-void guac_indexed_surface_free(guac_indexed_surface* surface);
-
-/**
- * Given an indexed surface and a query image, finds the rectangle of the
- * subimage of the indexed surface containing exactly the query image (if
- * any) and saves the result.
- *
- * @param surface The guac_indexed_surface to query.
- * @param query The image to search for within the indexed surface.
- * @param result A pointer to an already-allocated
- *               guac_indexed_surface_subimage which will be modified
- *               to contain the result if a result is found.
- * @return Non-zero if the given query image was found within the indexed
- *         surface, in which case the result will be stored in the given
- *         guac_indexed_surface_subimage, or zero if the query image could
- *         not be found, in which case the given guac_indexed_surface_subimage
- *         will not be modified.
- */
-int guac_indexed_surface_find(guac_indexed_surface* surface,
-        cairo_surface_t* query, guac_indexed_surface_subimage* result);
-
 /**
  * Produces a 24-bit hash value from all pixels of the given surface. The
  * surface provided must be RGB or ARGB with each pixel stored in 32 bits.