size: remove useless TextDecoder vars

Author: ChALkeR

utf16.native.js

@@ -1,8 +1,6 @@
 import * as js from './fallback/utf16.js'
 import { nativeDecoder, isLE, E_STRING, E_STRICT_UNICODE } from './fallback/_utils.js'
 
-const { TextDecoder } = globalThis
-
 function checkDecoders() {
   // Not all barebone engines with TextDecoder support something except utf-8
   // Also workerd specifically has a broken utf-16le implementation

utf8.js

@@ -2,7 +2,6 @@ import { typedView } from './array.js'
 import { nativeDecoder, nativeEncoder, E_STRING, E_STRICT_UNICODE } from './fallback/_utils.js'
 import * as js from './fallback/utf8.auto.js'
 
-const { TextDecoder } = globalThis
 // ignoreBOM: true means that BOM will be left as-is, i.e. will be present in the output
 // We don't want to strip anything unexpectedly
 const decoderLoose = nativeDecoder