Remove unused variable from fixup_pdf_template.py.

Change-Id: I09e2295d6e9e9c4bee543dec4ece2e0eaedc5741
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/55470
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/testing/tools/fixup_pdf_template.py b/testing/tools/fixup_pdf_template.py
index 88915ed..0a6191f 100755
--- a/testing/tools/fixup_pdf_template.py
+++ b/testing/tools/fixup_pdf_template.py
@@ -23,8 +23,6 @@
 import re
 import sys
 
-SCRIPT_PATH = os.path.abspath(os.path.dirname(__file__))
-
 
 class StreamLenState:
   START = 1