diff --git a/lib/functions.php b/lib/functions.php
index 18b18ae..16f6583 100644
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -140,26 +140,6 @@ function getStdinLineReader(): LineReader
     return $stream;
 }
 
-/**
- * Get data eventually buffered by the STDIN LineReader.
- *
- * @return LineReader
- */
-function getStdinBuffer(): string
-{
-    return getStdinLineReader()->getBuffer();
-}
-
-/**
- * Clear data eventually buffered by the STDIN LineReader.
- *
- * @return void
- */
-function clearStdinBuffer()
-{
-    return getStdinLineReader()->clearBuffer();
-}
-
 /**
  * The STDOUT stream for the process associated with the currently active event loop.
  *