Revert "Added a filter function to remove 'use strict' statements."
Revert "Added a filter function to remove 'use strict' statements."

This reverts commit df8ed21faf51dc0f7392355e526429a14059ce87.

ebsco/pdf.js,ebsco/pdf.js,ebsco/pdf.js,ebsco/pdf.js,ebsco/pdf.js