quality: Fix LGTM code quality alerts (fixes #1213) (#1214)

Author: anthonyharrison

cve_bin_tool/merge.py

@@ -74,7 +74,6 @@ def scan_intermediate_file(self, filename):
         """Reads intermediate json file through filename and verify missing fields"""
         self.logger.info(f"Loading file: {filename}")
 
-        missing_fields = set()
         with open(filename) as json_file:
             json_file = json_file.read()
             inter_data = json.loads(json_file)

cve_bin_tool/output_engine/pdfbuilder.py

@@ -7,7 +7,7 @@
 from reportlab.lib import colors
 from reportlab.lib.styles import ParagraphStyle as PS
 from reportlab.lib.units import cm
-from reportlab.platypus import Image, PageBreak, Spacer, TableStyle
+from reportlab.platypus import PageBreak, Spacer, TableStyle
 from reportlab.platypus.doctemplate import (
     BaseDocTemplate,
     PageTemplate,
@@ -181,7 +181,7 @@ def heading(self, level, title):
         self._spacer()
 
     def paragraph(self, text, style=None):
-        if style == None:
+        if style is None:
             self.contents.append(Paragraph(text, self.body))
         else:
             self.contents.append(Paragraph(text, style))