Fix: documentation contains GeoCouch specifics

The original Couchbase documentation also contained information
about GeoCouch. Apache CouchDB doesn't include GeoCouch, hence
there should be no trace of it left in the documentation.
diff --git a/src/json-structure.rst b/src/json-structure.rst
index bc4d0d2..edc4c14 100644
--- a/src/json-structure.rst
+++ b/src/json-structure.rst
@@ -201,42 +201,6 @@
 |                                | processed                                   |
 +--------------------------------+---------------------------------------------+
 
-Design Document spatial index Information
-=========================================
-
-+--------------------------------+---------------------------------------------+
-| Field                          | Description                                 |
-+================================+=============================================+
-| name                           | Name/ID of Design Document                  |
-+--------------------------------+---------------------------------------------+
-| spatial_index                  | View Index                                  |
-+--------------------------------+---------------------------------------------+
-|     compact_running            | Indicates whether a compaction routine is   |
-|                                | currently running on the view               |
-+--------------------------------+---------------------------------------------+
-|     disk_size                  | Size in bytes of the view as stored on disk |
-+--------------------------------+---------------------------------------------+
-|     language                   | Language for the defined views              |
-+--------------------------------+---------------------------------------------+
-|     purge_seq                  | The purge sequence that has been processed  |
-+--------------------------------+---------------------------------------------+
-|     signature                  | MD5 signature of the views for the design   |
-|                                | document                                    |
-+--------------------------------+---------------------------------------------+
-|     update_seq                 | The update sequence of the corresponding    |
-|                                | database that has been indexed              |
-+--------------------------------+---------------------------------------------+
-|     updater_running            | Indicates if the view is currently being    |
-|                                | updated                                     |
-+--------------------------------+---------------------------------------------+
-|     waiting_clients            | Number of clients waiting on views from this|
-|                                | design document                             |
-+--------------------------------+---------------------------------------------+
-|     waiting_commit             | Indicates if there are outstanding commits  |
-|                                | to the underlying database that need to     |
-|                                | processed                                   |
-+--------------------------------+---------------------------------------------+
-
 Document with Attachments
 =========================