Update translation files

Updated by "Cleanup translation files" hook in Weblate.

Translation: Matomo/CommunityPlugin PerformanceAudit
Translate-URL: https://hosted.weblate.org/projects/matomo/communityplugin-performanceaudit/

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Co-authored-by: Hosted Weblate <hosted@weblate.org>

Author: weblate

lang/ja.json

@@ -5,7 +5,6 @@
         "CoreAdminHome_MenuPerformance": "パフォーマンス",
         "CoreAdminHome_PluginPerformance": "Performanceauditプラグイン",
         "CoreAdminHome_VersionPerformance": "現在、%4$s プラグインのバージョン %1$s%2$s%3$s を使用しています。",
-        "Donate": "寄付する",
         "EnvironmentDesktop": "デスクトップ",
         "EnvironmentMobile": "モバイル",
         "Metrics_Max_Percent": "最高 %",