examples/filesystem: remove dedicated FatFS section from readme

FAT now behaves just like all other FSs and does not need special treatment.

examples/filesystem/Makefile

@@ -36,6 +36,7 @@ USEMODULE += vfs
 USEMODULE += littlefs2
 # USEMODULE += spiffs
 # USEMODULE += fatfs_vfs
+# USEMODULE += fatfs_vfs_format
 USEMODULE += constfs
 # USEMODULE += devfs
 

examples/filesystem/README.md

@@ -7,8 +7,8 @@ application.
 
 In particular, this example shows:
 
-- how to mount/format/unmount a file system, either with spiffs, littlefs or
-  constfs
+- how to mount/format/unmount a file system, either with spiffs, littlefs, fatfs
+  or constfs
 - how to open/read/write/close a file with and without newlib
 
 In RIOT, most file systems use a `mtd` as flash interface. So to use this
@@ -76,45 +76,3 @@ Hello World!
 cat /const/hello-riot
 Hello RIOT!
 ```
-
-## Example on `native` with `fatfs`
-
-- Unpack the provided image proviced in the `pkg_fatfs` test:
-
-```
-$ tar vxjf ../../tests/pkg_fatfs/riot_fatfs_disk.tar.bz2
-riot_fatfs_disk.img
-```
-
-- Configure the application to use the file and the right geometry by adding
-  these to the Makefile:
-
-```
-CFLAGS += -DMTD_NATIVE_FILENAME=\"riot_fatfs_disk.img\"
-CFLAGS += -DMTD_SECTOR_NUM=262144
-```
-
-- In the Makefile, comment the `littlefs2` USEMODULE line, and enable the
-  `fatfs_vfs` line instead.
-
-- Build and run the `filesystem` example application on the `native` target as above.
-
-- Mount the external file system:
-
-```
-> mount
-mount
-/sda successfully mounted
-```
-
-- List the available files in the FAT partition:
-
-```
-> ls /sda
-ls /sda
-TEST.TXT
-total 1 files
-```
-
-- You can also use the writing commands now to create and modify files; run
-  `vfs` for instructions.