Core/Commands: remove(): fix arguments passed to unregister()

lib/PBot/Core/Commands.pm

@@ -67,7 +67,7 @@ sub add {
 
 # alias to unregister() for consistency
 sub remove {
-    my ($self) = @_;
+    my $self = shift @_;
     $self->unregister(@_);
 }
 

lib/PBot/VERSION.pm

@@ -25,7 +25,7 @@ use PBot::Imports;
 # These are set by the /misc/update_version script
 use constant {
     BUILD_NAME     => "PBot",
-    BUILD_REVISION => 4347,
+    BUILD_REVISION => 4348,
     BUILD_DATE     => "2021-08-06",
 };