workloads: Use uninstall method instead of uninstall_executable

For workloads that support Linux targets do not use
`uninstall_executable` as this is not available, instead use `uninstall` as
other targets should be able to determine the appropriate uninstallation
method.

wa/workloads/meabo/__init__.py

@@ -313,4 +313,4 @@ class Meabo(Workload):
 
     @once
     def _uninstall_executable(self):
-        self.target.uninstall_executable(self.target_exe)
+        self.target.uninstall(self.target_exe)