[pylint] Remove check for dot in alias name in useless-import-alias (PLC0414) (#14345)

Follow-up to #14287 : when checking that `name` is the same as `as_name`
in `import name as as_name`, we do not need to first do an early return
if `'.'` is found in `name`.

Author: dylwil3

crates/ruff_linter/src/rules/pylint/rules/useless_import_alias.rs

@@ -59,9 +59,6 @@ pub(crate) fn useless_import_alias(checker: &mut Checker, alias: &Alias) {
     let Some(asname) = &alias.asname else {
         return;
     };
-    if alias.name.contains('.') {
-        return;
-    }
     if alias.name.as_str() != asname.as_str() {
         return;
     }
@@ -97,9 +94,6 @@ pub(crate) fn useless_import_from_alias(
     let Some(asname) = &alias.asname else {
         return;
     };
-    if alias.name.contains('.') {
-        return;
-    }
     if alias.name.as_str() != asname.as_str() {
         return;
     }