minor symfony#28515 [Lock] remove useless code (ronfroy)

This PR was submitted for the master branch but it was squashed and merged into the 3.4 branch instead (closes symfony#28515).

Discussion
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[Lock] remove useless code

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

remove usless code

Commits
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0d38c71 [Lock] remove useless code

Author: nicolas-grekas

src/Symfony/Component/Lock/Store/CombinedStore.php

@@ -151,8 +151,6 @@ public function delete(Key $key)
                 $store->delete($key);
             } catch (\Exception $e) {
                 $this->logger->notice('One store failed to delete the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'exception' => $e));
-            } catch (\Throwable $e) {
-                $this->logger->notice('One store failed to delete the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'exception' => $e));
             }
         }
     }