chore(deps): Remove unnecessary submodules

Signed-off-by: jld3103 <jld3103yt@gmail.com>

.gitmodules

@@ -1,21 +1,12 @@
 [submodule "external/nextcloud-server"]
 	path = external/nextcloud-server
 	url = https://github.com/nextcloud/server.git
-[submodule "external/nextcloud-news"]
-	path = external/nextcloud-news
-	url = https://github.com/nextcloud/news.git
 [submodule "external/seti-ui"]
 	path = external/seti-ui
 	url = https://github.com/jesseweed/seti-ui.git
-[submodule "external/nextcloud-notes"]
-	path = external/nextcloud-notes
-	url = https://github.com/nextcloud/notes.git
 [submodule "external/nextcloud-notifications"]
 	path = external/nextcloud-notifications
 	url = https://github.com/nextcloud/notifications.git
-[submodule "external/nextcloud-uppush"]
-	path = external/nextcloud-uppush
-	url = https://github.com/UP-NextPush/server-app.git
 [submodule "external/flathub-shared-modules"]
 	path = external/flathub-shared-modules
 	url = https://github.com/flathub/shared-modules.git

external/nextcloud-news

@@ -1 +0,0 @@
-Subproject commit 144d6d188e2280896f6cacc2218e583d939b4407

external/nextcloud-notes

@@ -1 +0,0 @@
-Subproject commit 50e881eb151ec5b94fa2bfe0b94c5cd3bbc2acc7

external/nextcloud-uppush

@@ -1 +0,0 @@
-Subproject commit 5ae33f4ebae9e478d40d2c776d9d305a58a829aa