fix(crash-tracking): Remove exception logging (#8045)

Only log exception in debug mode
Decrease the log level

Author: PerfectSlayer

dd-java-agent/agent-crashtracking/src/main/java/com/datadog/crashtracking/OOMENotifierScriptInitializer.java

@@ -124,7 +124,11 @@ static void run(Path dir) {
           Files.walkFileTree(dir, new ScriptCleanupVisitor());
         }
       } catch (IOException e) {
-        LOG.warn("Failed cleaning up process specific files in {}", dir, e);
+        if (LOG.isDebugEnabled()) {
+          LOG.info("Failed cleaning up process specific files in {}", dir, e);
+        } else {
+          LOG.info("Failed cleaning up process specific files in {}: {}", dir, e.toString());
+        }
       }
     }