Remove legacy qr code login

[bmarty]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Remove the feature login by QR code. It was not enabled and was using libolm that we will fully remove in a future PR.

Motivation and context

Closes #8889

Screenshots / GIFs

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[ElementBot]

	Warnings
⚠️	vector/src/main/AndroidManifest.xml#L16 - READ_EXTERNAL_STORAGE is deprecated (and is not granted) when targeting Android 13+. If you need to query or interact with MediaStore or media files on the shared storage, you should instead use one or more new storage permissions: READ_MEDIA_IMAGES, READ_MEDIA_VIDEO or READ_MEDIA_AUDIO.
⚠️	vector/src/main/AndroidManifest.xml#L16 - READ_EXTERNAL_STORAGE is deprecated (and is not granted) when targeting Android 13+. If you need to query or interact with MediaStore or media files on the shared storage, you should instead use one or more new storage permissions: READ_MEDIA_IMAGES, READ_MEDIA_VIDEO or READ_MEDIA_AUDIO.
⚠️	vector/src/main/AndroidManifest.xml#L192 - Attribute autoVerify is only used in API level 23 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L192 - Attribute autoVerify is only used in API level 23 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L226 - Consider splitting data tag into multiple tags with individual attributes to avoid confusion
⚠️	vector/src/main/AndroidManifest.xml#L226 - Consider splitting data tag into multiple tags with individual attributes to avoid confusion
⚠️	vector/src/main/AndroidManifest.xml#L229 - Consider splitting data tag into multiple tags with individual attributes to avoid confusion
⚠️	vector/src/main/AndroidManifest.xml#L229 - Consider splitting data tag into multiple tags with individual attributes to avoid confusion
⚠️	vector/src/main/AndroidManifest.xml#L283 - Expecting android:screenOrientation="unspecified" or "fullSensor" for this activity so the user can use the application in any orientation and provide a great experience on Chrome OS devices
⚠️	vector/src/main/AndroidManifest.xml#L283 - Expecting android:screenOrientation="unspecified" or "fullSensor" for this activity so the user can use the application in any orientation and provide a great experience on Chrome OS devices
⚠️	vector/src/main/AndroidManifest.xml#L283 - Should not restrict activity to fixed orientation. This may not be suitable for different form factors, causing the app to be letterboxed.
⚠️	vector/src/main/AndroidManifest.xml#L283 - Should not restrict activity to fixed orientation. This may not be suitable for different form factors, causing the app to be letterboxed.
⚠️	vector/src/main/AndroidManifest.xml#L292 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L292 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L299 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L299 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L305 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L305 - Attribute supportsPictureInPicture is only used in API level 24 and higher (current min is 21)
⚠️	vector/src/main/AndroidManifest.xml#L427 - Exported receiver does not require permission
⚠️	vector/src/main/AndroidManifest.xml#L427 - Exported receiver does not require permission
⚠️	vector/src/main/res/layout/fragment_ftue_combined_login.xml#L7 - Possible overdraw: Root element paints background ?android:colorBackground with a theme that also paints a background (inferred theme is @android:style/Theme.Holo)
⚠️	vector/src/main/res/layout/fragment_ftue_combined_login.xml#L7 - Possible overdraw: Root element paints background ?android:colorBackground with a theme that also paints a background (inferred theme is @android:style/Theme.Holo)

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