docs: remove unused import

Author: gunjjoshi

lib/node_modules/@stdlib/fft/base/fftpack/lib/index.js

@@ -22,10 +22,6 @@
 * When adding modules to the namespace, ensure that they are added in alphabetical order according to module name.
 */
 
-// MODULES //
-
-var setReadOnly = require( '@stdlib/utils/define-read-only-property' );
-
 
 // MAIN //