core, docs: drop message views if they exist, remove mentions in docs (#3589)

* core, docs: drop message views if they exist, remove mentions in docs

* fix migration

docs/ANDROID.md

@@ -20,6 +20,7 @@ If you want to view what's stored inside SimpleX data directory you need to have
 - your device connected via USB or Wi-Fi to the computer.
 
 ## The process:
+
 - open SimpleX, go to `Database passphrase & export`, enable `App data backup`. This will make other steps working
 - _optional_: if you want to view database contents, change database passphrase from random to yours. To do this, stop a chat in `Database passphrase & export` screen, open `Database passphrase`, enter new passphrase and confirm it, then update it. Do not forget it, otherwise you'll lose all your data in case passphrase will be asked again later
 - open a terminal emulator (Windows CMD/Powershell will not work) and change directory to the one you want to use for storing the backup:
@@ -43,4 +44,14 @@ Now the backed-up files will be inside `./apps/chat.simplex.app/`.
 
 Please, note, that if you use a modern version of SimpleX, the databases will be encrypted, and you'll not be able to view contents of them without using `sqlcipher` application and without knowing decryption passphrase (you need to change it to yours from randomly generated in the app firstly).
 
-Please, follow [SQL.md](./SQL.md) guide for more info of how to decrypt your databases and to make queries to them.
+## Decrypting databases
+
+In order to view database data you need to decrypt it first. Install `sqlcipher` using your favorite package manager and run the following commands in the directory with databases:
+```bash
+sqlcipher files_chat.db
+pragma key="youDecryptionPassphrase";
+# Ensure it works fine
+select * from users;
+```
+
+If you see `Parse error: no such table: users`, make sure you entered correct passphrase, and you have changed passphrase from random in Android app (if you got this database from Android device, of course).