Remove typst plugin

It was nice but really slow.

showbits-thermal-printer/src/documents/lib/main.typ

@@ -23,38 +23,3 @@
 // Determined by experiments so that the top and bottom white border are roughly
 // the same size after tearing off the paper.
 #let feed = v(64pt + 32pt)
-
-////////////
-// Plugin //
-////////////
-
-#import plugin("plugin.wasm") as p
-
-#let _number_to_bytes(n) = int(n).to-bytes(size: 8)
-
-#let _bool_to_bytes(b) = _number_to_bytes(if b { 1 } else { 0 })
-
-#let _str_to_bytes(s) = {
-  bytes(s)
-}
-
-#let _length_to_bytes(l) = {
-  let l = l.pt()
-  let n = if l > 10000 { -1 } else { int(l) }
-  _number_to_bytes(n)
-}
-
-#let dither(
-  data,
-  bright: true,
-  algorithm: "floyd-steinberg",
-) = layout(size => {
-  let dithered = p.dither(
-    data,
-    _length_to_bytes(size.width),
-    _length_to_bytes(size.height),
-    _bool_to_bytes(bright),
-    _str_to_bytes(algorithm),
-  )
-  image(dithered)
-})

showbits-thermal-printer/src/documents/lib/plugin.wasm

@@ -1 +0,0 @@
-../../../../showbits-typst-plugin/target/wasm32-unknown-unknown/release/showbits_typst_plugin.wasm