Make hardcoded hours string translatable

app/Locale/zh_CN/translations.php

@@ -256,7 +256,6 @@ return array(
     'Do you really want to remove this sub-task?' => '请确认是否要删除此子任务？',
     'Remaining:' => '剩余：',
     'hours' => '小时',
-    'spent' => '花费',
     'estimated' => '评估',
     'Sub-Tasks' => '子任务',
     'Add a sub-task' => '添加子任务',
@@ -481,7 +480,6 @@ return array(
     'Link removed successfully.' => '成功删除关联。',
     'Link labels' => '关联标签',
     'Link modification' => '关联修改',
-    'Links' => '关联',
     'Opposite label' => '反向标签',
     'Remove a link' => '删除关联',
     'The labels must be different' => '标签不能一样',
@@ -522,7 +520,6 @@ return array(
     'CAD - Canadian Dollar' => '加元',
     'CHF - Swiss Francs' => '瑞士法郎',
     'Custom Stylesheet' => '自定义样式表',
-    'download' => '下载',
     'EUR - Euro' => '欧元',
     'GBP - British Pound' => '英镑',
     'INR - Indian Rupee' => '印度卢比',
@@ -593,7 +590,6 @@ return array(
     'Existing due date' => '已超期',
     'Factor to calculate new due date: ' => '超期因素',
     'Month(s)' => '月',
-    'Recurrence' => '循环',
     'This task has been created by: ' => '此任务被谁创建：',
     'Recurrent task has been generated:' => '循环任务已生成：',
     'Timeframe to calculate new due date: ' => '计算超期时间表',
@@ -731,7 +727,6 @@ return array(
     'NOK - Norwegian Krone' => '克朗',
     'Show this column' => '显示任务栏',
     'Hide this column' => '隐藏任务栏',
-    'open file' => '打开文件',
     'End date' => '结束日期',
     'Users overview' => '用户概览',
     'Members' => '成员',
@@ -1380,4 +1375,6 @@ return array(
     // '%s moved the task #%d to the column "%s"' => '',
     // '%s moved the task #%d to the position %d in the column "%s"' => '',
     // '%s moved the task #%d to the swimlane "%s"' => '',
+    // '%sh spent' => '',
+    // '%sh estimated' => '',
 );