remove deprecated F-Droid Limited Bitcoin address

We now receive crypto donations via:
https://opencollective.com/f-droid/donate/crypto

admin#342
admin#197

metadata/de.k3b.android.camerafolder.yml

@@ -9,7 +9,6 @@ Changelog: https://github.com/k3b/CameraFolder/releases
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: Camera Folder
 

metadata/org.fdroid.basic.yml

@@ -10,7 +10,6 @@ Changelog: https://gitlab.com/fdroid/fdroidclient/raw/HEAD/CHANGELOG.md
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: F-Droid Basic
 Summary: the new, simple test version of app store you know and love

metadata/org.fdroid.fdroid.ota.yml

@@ -9,7 +9,6 @@ Changelog: https://gitlab.com/fdroid/fdroidclient/raw/HEAD/CHANGELOG.md
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: F-Droid OTA
 

metadata/org.fdroid.fdroid.privileged.ota.yml

@@ -8,7 +8,6 @@ Translation: https://hosted.weblate.org/projects/f-droid/privileged-extension/
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 Name: F-Droid Privileged Extension OTA
 AutoName: F-Droid Privileged Extension

metadata/org.fdroid.fdroid.privileged.yml

@@ -8,7 +8,6 @@ Translation: https://hosted.weblate.org/projects/f-droid/privileged-extension/
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: F-Droid Privileged Extension
 

metadata/org.fdroid.fdroid.yml

@@ -9,7 +9,6 @@ Changelog: https://gitlab.com/fdroid/fdroidclient/raw/HEAD/CHANGELOG.md
 Donate: https://f-droid.org/donate
 FlattrID: '343053'
 LiberapayID: '27859'
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: F-Droid
 

metadata/org.fdroid.nearby.yml

@@ -6,7 +6,6 @@ SourceCode: https://gitlab.com/fdroid/fdroid-nearby
 IssueTracker: https://gitlab.com/fdroid/fdroid-nearby/issues
 Donate: https://f-droid.org/donate
 Liberapay: F-Droid-Data
-Bitcoin: 15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18
 
 AutoName: F-Droid Nearby
 Description: |