Add fontenc into incompatible packages

Author: Zipper-1

mathtranslate/process_latex.py

@@ -492,8 +492,8 @@ def replace_function(match):
     return pattern.sub(replace_function, latex)
 
 def remove_incompatible_packages(text):
-    incompatible_list=['axessibility']
-    #axessibility is incompatible with xeCJK and can be removed savely
+    incompatible_list=['axessibility','fontenc']
+    #axessibility,fontenc is incompatible with xeCJK and can be removed safely
     #maybe more will be added
     for package in incompatible_list:
         pattern = re.compile(r'\\usepackage(\[[A-Za-z]*?\])?\{'+package+r'\}')