Remove type constraint for breakpoint-to-event. (#5)

Type constraint prevented clearing breakpoints.

Author: slid1amo2n3e4

lib/MoarVM/Remote.rakumod

@@ -118,7 +118,7 @@ class MoarVM::Remote {
 
     has %!event-suppliers;
 
-    has %!breakpoint-to-event{Any};
+    has %!breakpoint-to-event;
 
     has Lock $!filenames-lock .= new;
     has @!filenames;