diff --git a/bin/rename-source-files.js b/bin/rename-source-files.js
deleted file mode 100755
index 4135aa3f..00000000
--- a/bin/rename-source-files.js
+++ /dev/null
@@ -1,46 +0,0 @@
-const fs = require('fs');
-const path = require('path');
-
-function findSourceFiles( dir ) {
-  let sourceFiles = [];
-  const files = fs.readdirSync( dir );
-
-  for ( const file of files ) {
-    const filePath = path.join( dir, file );
-    const relativePath = path.relative( path.join( __dirname, '../src'), filePath );
-    const isDirectory = fs.statSync( filePath ).isDirectory();
-
-    if ( isDirectory ) {
-      sourceFiles.push(...findSourceFiles( filePath ));
-      continue;
-    }
-
-    const isProbablySource = filePath.endsWith('.css');
-    const shouldIgnore = (
-      /^lib\/_imports\/[^/]+\/[^/]+\/[^/]+\.css$/.test(relativePath) ||
-      relativePath.includes('_imports/vendors') ||
-      filePath.endsWith('README.css')
-    );
-
-    if ( isProbablySource && ! shouldIgnore ) {
-      sourceFiles.push(filePath);
-    }
-  }
-
-  return sourceFiles;
-}
-
-const sourceDir = path.join( __dirname, '../', 'src');
-const sourceFiles = findSourceFiles( sourceDir );
-
-if ( sourceFiles.length > 0 ) {
-  for ( const filePath of sourceFiles ) {
-    const newFilePath = filePath.replace(/\.css$/, '.postcss');
-
-    fs.renameSync( filePath, newFilePath );
-
-    console.log(`Renamed: ${filePath} to ${newFilePath}`);
-  }
-} else {
-  console.log('No source files found. No files renamed.');
-}