pylint 2.16: remove pointless parens around equality assignments

Given the construct `foo = (bar == baz)` some people like parentheses
and some do not. They're pointless and don't mean anything, though. I
don't feel this is particularly helpful to code clarity, tbh, and pylint
now notices this and warns about it in our current pylint config.

I think this is reasonable, so let's remove the odd parens.

mesonbuild/backend/ninjabackend.py

@@ -2669,7 +2669,7 @@ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47485'''))
                                              is_generated: bool = False) -> 'ImmutableListProtocol[str]':
         # The code generated by valac is usually crap and has tons of unused
         # variables and such, so disable warnings for Vala C sources.
-        no_warn_args = (is_generated == 'vala')
+        no_warn_args = is_generated == 'vala'
         # Add compiler args and include paths from several sources; defaults,
         # build options, external dependencies, etc.
         commands = self.generate_basic_compiler_args(target, compiler, no_warn_args)

mesonbuild/mtest.py

@@ -411,7 +411,7 @@ class TAPParser:
                     yield self.Error('more than one plan found')
                 else:
                     num_tests = int(m.group(1))
-                    skipped = (num_tests == 0)
+                    skipped = num_tests == 0
                     if m.group(2):
                         if m.group(2).upper().startswith('SKIP'):
                             if num_tests > 0:

mesonbuild/scripts/vcstagger.py

@@ -27,7 +27,7 @@ def config_vcs_tag(infile: str, outfile: str, fallback: str, source_dir: str, re
         new_data = f.read().replace(replace_string, new_string)
     if os.path.exists(outfile):
         with open(outfile, encoding='utf-8') as f:
-            needs_update = (f.read() != new_data)
+            needs_update = f.read() != new_data
     else:
         needs_update = True
     if needs_update: