LibCore: Remove deprecated ElapsedTimer::elapsed()

This follows FIXME in the code.

Libraries/LibCore/ElapsedTimer.h

@@ -31,12 +31,6 @@ public:
     i64 elapsed_milliseconds() const;
     AK::Duration elapsed_time() const;
 
-    // FIXME: Move callers to elapsed_milliseconds(), remove this.
-    i64 elapsed() const // milliseconds
-    {
-        return elapsed_milliseconds();
-    }
-
     MonotonicTime const& origin_time() const { return m_origin_time; }
 
 private:

Libraries/LibWeb/HTML/Scripting/ClassicScript.cpp

@@ -51,7 +51,7 @@ GC::Ref<ClassicScript> ClassicScript::create(ByteString filename, StringView sou
     // 10. Let result be ParseScript(source, realm, script).
     auto parse_timer = Core::ElapsedTimer::start_new();
     auto result = JS::Script::parse(source, realm, script->filename(), script, source_line_number);
-    dbgln_if(HTML_SCRIPT_DEBUG, "ClassicScript: Parsed {} in {}ms", script->filename(), parse_timer.elapsed());
+    dbgln_if(HTML_SCRIPT_DEBUG, "ClassicScript: Parsed {} in {}ms", script->filename(), parse_timer.elapsed_milliseconds());
 
     // 11. If result is a list of errors, then:
     if (result.is_error()) {
@@ -101,7 +101,7 @@ JS::Completion ClassicScript::run(RethrowErrors rethrow_errors, GC::Ptr<JS::Envi
 
         // FIXME: If ScriptEvaluation does not complete because the user agent has aborted the running script, leave evaluationStatus as null.
 
-        dbgln_if(HTML_SCRIPT_DEBUG, "ClassicScript: Finished running script {}, Duration: {}ms", filename(), timer.elapsed());
+        dbgln_if(HTML_SCRIPT_DEBUG, "ClassicScript: Finished running script {}, Duration: {}ms", filename(), timer.elapsed_milliseconds());
     }
 
     // 7. If evaluationStatus is an abrupt completion, then:

Services/RequestServer/ConnectionFromClient.cpp

@@ -605,7 +605,7 @@ void ConnectionFromClient::ensure_connection(URL::URL const& url, ::RequestServe
             Core::ElapsedTimer timer;
             timer.start();
             promise->when_resolved([url, timer](auto const& results) -> ErrorOr<void> {
-                dbgln("ensure_connection::ResolveOnly({}) OK {} entrie(s) in {}ms", url, results->cached_addresses().size(), timer.elapsed());
+                dbgln("ensure_connection::ResolveOnly({}) OK {} entrie(s) in {}ms", url, results->cached_addresses().size(), timer.elapsed_milliseconds());
                 return {};
             });
             promise->when_rejected([url](auto const&) { dbgln("ensure_connection::ResolveOnly({}) rejected", url); });