Add uninstallation steps (neo4j#1331)

Co-authored-by: Reneta Popova <[email protected]>

modules/ROOT/pages/installation/linux/debian.adoc

@@ -261,3 +261,15 @@ For more information, see xref:configuration/set-initial-password.adoc[].
 ====
 
 For more information on operating the Neo4j system service, see xref:installation/linux/systemd.adoc[Neo4j system service].
+
+== Uninstall Neo4j
+
+Follow these steps to uninstall Neo4j:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Uninstall Neo4j:
++
+[source, shell]
+---
+sudo apt remove neo4j
+---

modules/ROOT/pages/installation/linux/rpm.adoc

@@ -236,4 +236,16 @@ In that case, you will be prompted to change the default password at first login
 For more information, see xref:configuration/set-initial-password.adoc[].
 ====
 
-For more information on operating the Neo4j system service, see xref:installation/linux/systemd.adoc[Neo4j system service]. 
+For more information on operating the Neo4j system service, see xref:installation/linux/systemd.adoc[Neo4j system service].
+
+== Uninstall Neo4j
+
+Follow these steps to uninstall Neo4j:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Uninstall Neo4j:
++
+[source, shell]
+---
+sudo yum remove neo4j
+---

modules/ROOT/pages/installation/linux/systemd.adoc

@@ -75,3 +75,15 @@ journalctl -e -u neo4j
 
 `journald` automatically rotates the log after a certain time and by default it commonly does not persist across reboots.
 Please see `man journald.conf` for further details.
+
+== Uninstall Neo4j
+
+Follow these steps to uninstall Neo4j:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Uninstall Neo4j:
++
+[source, shell]
+---
+sudo apt remove neo4j
+---

modules/ROOT/pages/installation/linux/tarball.adoc

@@ -107,4 +107,24 @@ reboot
 
 For more information on operating the Neo4j system service, see xref:installation/linux/systemd.adoc[Neo4j system service].
 
-include::partial$/installation/linux/linux-open-files.adoc[leveloffset=+1]
+include::partial$/installation/linux/linux-open-files.adoc[leveloffset=+1]
+
+== Uninstall Neo4j
+
+Follow these steps to uninstall Neo4j on Linux:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Stop all Neo4j running services:
++
+[source, shell]
+---
+sudo systemctl stop neo4j
+sudo systemctl disable neo4j
+---
+. Delete _NEO4J_HOME_ and the file _/lib/systemd/system/neo4j.service_:
++
+[source, shell]
+---
+rm /lib/systemd/system/neo4j.service
+rm -rf NEO4J_HOME
+---

modules/ROOT/pages/installation/osx.adoc

@@ -47,3 +47,23 @@ dbms.jvm.additional=-XX:-MaxFDLimit
 Without this setting, the file descriptor limit for the JVM will not be increased beyond 10240.
 Note, however, that this only applies to macOS.
 On all other operating systems, you should always leave the `MaxFDLimit` JVM setting enabled.
+
+== Uninstall Neo4j
+
+Here are the steps to uninstall Neo4j on macOS:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Stop all Neo4j running services:
++
+[source, shell]
+---
+sudo systemctl stop neo4j
+sudo systemctl disable neo4j
+---
+. Delete _NEO4J_HOME_ and the file _/lib/systemd/system/neo4j.service_:
++
+[source, shell]
+---
+rm /lib/systemd/system/neo4j.service
+rm -rf NEO4J_HOME
+---

modules/ROOT/pages/installation/windows.adoc

@@ -77,3 +77,22 @@ bin\neo4j restart
 
 
 include::partial$/installation/windows/powershell.adoc[leveloffset=+1]
+
+== Uninstall Neo4j
+
+Here are the steps to uninstall Neo4j on Windows:
+
+. (Optional) Create a xref:/backup-restore/index.adoc[backup] to avoid losing your data.
+. Stop all Neo4j processes by using the Task Manager.
+. Uninstall the Neo4j Windows service:
++
+[source, shell]
+---
+bin\neo4j windows-service uninstall
+---
+. Delete _NEO4J_HOME_:
++
+[source, shell]
+---
+rmdir NEO4J_HOME
+---