VT: shit is still rolling

- We might need virtual disk image...

Former-commit-id: c3278cd9fe1ddad8b26b45577fecb0500365d38b

src/net/torvald/terrarum/virtualcomputer/terminal/GraphicsTerminal.kt

@@ -37,8 +37,6 @@ class GraphicsTerminal(private val host: TerrarumComputer) : Terminal {
     private val colourKey: Int
         get() = backColour.shl(4) or (foreColour).and(0xFF)
 
-    override var lastInputByte = -1
-
     override fun getColor(index: Int) = videoCard.CLUT[index]
 
     override val displayW: Int; get() = videoCard.width //+ 2 * borderSize
@@ -272,11 +270,6 @@ class GraphicsTerminal(private val host: TerrarumComputer) : Terminal {
         }
     }
 
-    override fun getKeyPress(): Int? {
-        //TODO("not implemented")
-        return null
-    }
-
     companion object {
         private val WHITE7500 = Color(0xe4eaff)