Remove --from-pagecache from the options list

Author: NataliaIvakina

modules/ROOT/pages/backup-restore/copy-database.adoc

@@ -28,7 +28,7 @@ For more information, see <<copy-estimating-iops, Estimating the processing time
 [source,role=noheader]
 ----
 neo4j-admin database copy [-h] [--copy-schema] [--expand-commands] [--force] [--verbose] [--compact-node-store[=true|false]]
-                             [--additional-config=<file>] [--from-pagecache=<size>] [--from-pagecache, --max-off-heap-memory=<size>]
+                             [--additional-config=<file>] [--from-pagecache, --max-off-heap-memory=<size>]
                              [--temp-path=<path>] [--to-format=<format>]
                              [--to-path-schema=<path>] [--copy-only-node-properties=<label.property>[,<label.property>...]]...
                              [--copy-only-nodes-with-labels=<label>[,<label>...]]... [--copy-only-relationship-properties=<relationship.
@@ -124,13 +124,6 @@ The indexes will be built the first time the database is started.
 |Force the command to run even if the integrity of the database cannot be verified.
 |
 
-|--from-pagecache=<size>
-|The size of the page cache to use for reading.
-[TIP]
-You can use the `--from-pagecache` option to speed up the copy operation by specifying how much cache to allocate when reading the source.
-The `--from-pagecache` should be assigned whatever memory you can spare since Neo4j does random reads from the source.
-|8m
-
 |--from-path-data=<path>
 |Path to the databases directory, containing the database directory to source from.
 It can be used to target databases outside of the installation.