Fix double negative in 'No CMake binary not found'

Author: jon-turney

mesonbuild/dependencies/base.py

@@ -1096,7 +1096,7 @@ def __init__(self, name: str, environment: Environment, kwargs, language: T.Opti
         self.cmakebin = CMakeExecutor(environment, CMakeDependency.class_cmake_version, self.for_machine, silent=self.silent)
         if not self.cmakebin.found():
             self.cmakebin = None
-            msg = f'No CMake binary for machine {self.for_machine} not found. Giving up.'
+            msg = f'CMake binary for machine {self.for_machine} not found. Giving up.'
             if self.required:
                 raise DependencyException(msg)
             mlog.debug(msg)