rust: avoid redundant 'static lifetime

'static is apparently automatic for const variables.

Differential Revision: https://phab.mercurial-scm.org/D1846

rust/hgcli/build.rs

@@ -84,7 +84,7 b' fn have_shared(config: &PythonConfig) ->'
     return dll.exists();
 }
 
-const REQUIRED_CONFIG_FLAGS: [&'static str; 2] = ["Py_USING_UNICODE", "WITH_THREAD"];
+const REQUIRED_CONFIG_FLAGS: [&str; 2] = ["Py_USING_UNICODE", "WITH_THREAD"];
 
 fn main() {
     let config = get_python_config();