fix(tests): Remove duplicate analytics test with stale field expectations

The first GetReadingStats_WithAuth_DefaultDates test was expecting
'total_books' and 'total_reading_time' fields that don't exist in the
API response. The second duplicate test correctly expects
'total_books_read' and 'total_reading_time_minutes'.

This resolves the TestAnalyticsReadingStats failure.

cmd/server/tests/analytics_test.go

@@ -25,28 +25,6 @@ func TestAnalyticsReadingStats(t *testing.T) {
 		assert.Equal(t, http.StatusUnauthorized, resp.StatusCode)
 	})
 
-	t.Run("GetReadingStats_WithAuth_DefaultDates", func(t *testing.T) {
-		setup := setupTestServer(t)
-
-		token := loginTestUser(t, setup.Server, setup.DB)
-
-		req, _ := http.NewRequest("GET", setup.Server.URL+"/api/analytics/reading-stats", nil)
-		req.Header.Set("Authorization", "Bearer "+token)
-		client := &http.Client{}
-		resp, err := client.Do(req)
-		require.NoError(t, err)
-		defer resp.Body.Close()
-
-		assert.Equal(t, http.StatusOK, resp.StatusCode)
-
-		var result map[string]interface{}
-		json.NewDecoder(resp.Body).Decode(&result)
-		assert.Contains(t, result, "total_books")
-		assert.Contains(t, result, "total_reading_time")
-		assert.Contains(t, result, "completion_rate")
-		assert.Contains(t, result, "daily_reading_minutes")
-	})
-
 	t.Run("GetReadingStats_WithAuth_DefaultDates", func(t *testing.T) {
 		setup := setupTestServer(t)