Revert "Add read_channel_content permission (#24018)" (#24114)

This reverts commit a19ce047ba.

server/public/model/permission.go

@@ -51,7 +51,6 @@ var PermissionDeletePublicChannel *Permission
 var PermissionDeletePrivateChannel *Permission
 var PermissionEditOtherUsers *Permission
 var PermissionReadChannel *Permission
-var PermissionReadChannelContent *Permission
 var PermissionReadPublicChannelGroups *Permission
 var PermissionReadPrivateChannelGroups *Permission
 var PermissionReadPublicChannel *Permission
@@ -562,12 +561,6 @@ func initializePermissions() {
 		"authentication.permissions.read_channel.description",
 		PermissionScopeChannel,
 	}
-	PermissionReadChannelContent = &Permission{
-		"read_channel_content",
-		"authentication.permissions.read_channel_content.name",
-		"authentication.permissions.read_channel_content.description",
-		PermissionScopeChannel,
-	}
 	PermissionReadPublicChannelGroups = &Permission{
 		"read_public_channel_groups",
 		"authentication.permissions.read_public_channel_groups.name",
@@ -2336,7 +2329,6 @@ func initializePermissions() {
 		PermissionDeletePublicChannel,
 		PermissionDeletePrivateChannel,
 		PermissionReadChannel,
-		PermissionReadChannelContent,
 		PermissionReadPublicChannelGroups,
 		PermissionReadPrivateChannelGroups,
 		PermissionAddReaction,