python: Stop using the Python 2 exception syntax

We could have made this compatible with Python 3 by using:

    except Exception as e:

But since none of this code actually uses the exception objects, let's
just drop them entirely.

Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mapi/glapi/gen/glX_XML.py

@@ -470,7 +470,7 @@ class glx_function(gl_XML.gl_function):
     def needs_reply(self):
         try:
             x = self._needs_reply
-        except Exception, e:
+        except Exception:
             x = 0
             if self.return_type != 'void':
                 x = 1

src/mapi/glapi/gen/gl_XML.py

@@ -284,7 +284,7 @@ def classify_category(name, number):
 
     try:
         core_version = float(name)
-    except Exception,e:
+    except Exception:
         core_version = 0.0
 
     if core_version > 0.0:
@@ -365,7 +365,7 @@ class gl_enum( gl_item ):
         else:
             try:
                 c = int(temp)
-            except Exception,e:
+            except Exception:
                 raise RuntimeError('Invalid count value "%s" for enum "%s" in function "%s" when an integer was expected.' % (temp, self.name, n))
 
             self.default_count = c
@@ -426,7 +426,7 @@ class gl_parameter(object):
             count = int(c)
             self.count = count
             self.counter = None
-        except Exception,e:
+        except Exception:
             count = 1
             self.count = 0
             self.counter = c

src/mapi/glapi/gen/gl_marshal.py

@@ -353,7 +353,7 @@ if __name__ == '__main__':
 
     try:
         (args, trail) = getopt.getopt(sys.argv[1:], 'm:f:')
-    except Exception,e:
+    except Exception:
         show_usage()
 
     for (arg,val) in args:

src/mapi/glapi/gen/gl_marshal_h.py

@@ -74,7 +74,7 @@ if __name__ == '__main__':
 
     try:
         (args, trail) = getopt.getopt(sys.argv[1:], 'm:f:')
-    except Exception,e:
+    except Exception:
         show_usage()
 
     for (arg,val) in args:

src/mesa/main/get_hash_generator.py

@@ -201,7 +201,7 @@ def show_usage():
 if __name__ == '__main__':
    try:
       (opts, args) = getopt.getopt(sys.argv[1:], "f:")
-   except Exception,e:
+   except Exception:
       show_usage()
 
    if len(args) != 0: