fix(tachidesk): Remove backup Time env var (#18890)

**Description**

Setting the time would break the install, this removes it, the backup
will run at 00:00, if people REALLY want to customize it then they can
wait for upstream and/or do another fix lol

⚒️ Fixes  # <!--(issue)-->

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code

**🧪 How Has This Been Tested?**
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**📃 Notes:**
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**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made corresponding changes to the documentation
- [ ] ⚠️ My changes generate no new warnings
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
versioning

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

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charts/stable/tachidesk-docker/Chart.yaml

@@ -35,4 +35,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/tachidesk-docker
   - https://ghcr.io/suwayomi/tachidesk
 type: application
-version: 6.2.0
+version: 6.2.1

charts/stable/tachidesk-docker/questions.yaml

@@ -134,12 +134,6 @@ questions:
                                         schema:
                                           type: boolean
                                           default: false
-                                      - variable: BACKUP_TIME
-                                        label: "Backup Time in 00:00 format"
-                                        description: "    Range: hour: 0-23, minute: 0-59 - Time of day at which the automated backup should be triggered"
-                                        schema:
-                                          type: string
-                                          default: "00:00"
                                       - variable: BACKUP_INTERVAL
                                         label: "Backup Update Interval"
                                         description: "Time in days (0 to disable it) for the interval in which the server will automatically create a backup"

charts/stable/tachidesk-docker/values.yaml

@@ -38,7 +38,6 @@ workload:
             UPDATE_EXCLUDE_COMPLETED: true
             UPDATE_INTERVAL: 12
             UPDATE_MANGA_INFO: false
-            BACKUP_TIME: ""
             BACKUP_INTERVAL: 1
             BACKUP_TTL: 14
             FLARESOLVERR_ENABLED: false