Remove pdfium_test build hack from r341852.

No longer needed because pdfium_test now follows
pdf_bundle_freetype_override rather than always use PDFium's FreeType.

TBR=dpranke@chromium.org

Review-Url: https://codereview.chromium.org/2784103003
Cr-Commit-Position: refs/heads/master@{#460706}
1 file changed