fix(blk): remove unrelated concepts MTA-6577 (#5617)

Author: SamyOubouaziz

pages/file-storage/concepts.mdx

@@ -22,10 +22,6 @@ Attaching storage to your Scaleway Instance allows you to use additional or shar
 
 <AvailabilityZone />
 
-## Block volumes
-
-<BlockVolumes />
-
 ## File Storage
 
 Scaleway File Storage allows you to keep data in an organized hierarchy of files and folders. This hierarchy can be shared across a network, so multiple compute instances can work on the same collection of files.
@@ -34,15 +30,6 @@ Scaleway File Storage allows you to keep data in an organized hierarchy of files
 
 A file system provides a structured way to manage files and directories in the cloud, so that Instances can access, read, and write data as if it were on a local disk. File systems can be shared by several [Instances](/instances/).
 
-## IOPS
-
-IOPS or Input/Ouptut Operations Per Second, is a unit of measurement that indicates how many read/write operations a storage device is performing per second.
-
-Scaleway File Storage offers two IOPS limits:
-
-- 5 000 IOPS (5K IOPS)
-- 15 000 IOPS (15K IOPS)
-
 ## Mount
 
 Mounting a storage volume allows you you to assign a directory (mount point) to an [attached](#attach) storage volume. The files on that storage become available via the assigned directory. This allows you to read and write files on the storage as if they were part of your local file system.