[ocrfeeder] Remove unnecessary variable when importing a PDF

[Joaquim Rocha <jrocha src gnome org>]

commit 774b066d25eb1d4d56b700837cab2695e0017e9d
Author: Joaquim Rocha <me joaquimrocha com>
Date:   Sun Mar 8 21:50:37 2020 +0100

    Remove unnecessary variable when importing a PDF
    
    It was assigned to the argument value and used only once.

 src/ocrfeeder/util/lib.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/src/ocrfeeder/util/lib.py b/src/ocrfeeder/util/lib.py
index 8f5016b..f2013e0 100644
--- a/src/ocrfeeder/util/lib.py
+++ b/src/ocrfeeder/util/lib.py
@@ -67,7 +67,6 @@ def convertPdfToImages(pdf_file, temp_dir = '/tmp'):
 
     file_name = os.path.basename(pdf_file)
     base_name = os.path.splitext(file_name)[0]
-    pdf_path = pdf_file
     file_name_safe = getSafeGhostscriptInputFilename(file_name)
     base_name_safe = getSafeGhostscriptOutputBasename(base_name)
     pdf_file_safe = getSafeGhostscriptPath(pdf_file)
@@ -89,7 +88,7 @@ def convertPdfToImages(pdf_file, temp_dir = '/tmp'):
         except:
             debug('PDF conversion warning: Cannot remove temp symlink: %s', pdf_path_safe)
     else:
-        runGhostscript(dir_name, base_name_safe, pdf_path)
+        runGhostscript(dir_name, base_name_safe, pdf_file)
 
     return dir_name