removed unused key bindings

Author: AnReu

Defold/input/game.input_binding

@@ -2,10 +2,6 @@ key_trigger {
   input: KEY_E
   action: "use"
 }
-key_trigger {
-  input: KEY_D
-  action: "drop"
-}
 key_trigger {
   input: KEY_UP
   action: "up"
@@ -22,10 +18,6 @@ key_trigger {
   input: KEY_RIGHT
   action: "right"
 }
-key_trigger {
-  input: KEY_R
-  action: "refill"
-}
 key_trigger {
   input: KEY_TAB
   action: "menu"