LBRY: remove 0.16.4 (16042) and 0.16.6 (16062)

Failing builds.

metadata/io.lbry.browser.yml

@@ -124,23 +124,6 @@ Builds:
     antifeatures:
       - Tracking
 
-  - versionName: 0.16.4
-    versionCode: 16042
-    commit: v0.16.4-fdroid
-    subdir: app
-    gradle:
-      - __64bit
-    rm:
-      - .gitsecret/keys/random_seed
-    prebuild:
-      - sed -r "s:29.0.1:29.0.2:" -i build.gradle
-      - sed "/firebase/d" -i build.gradle
-      - sed "/gms/d" -i build.gradle
-      - sed "/GoogleServicesPlugin/d" -i build.gradle
-    ndk: r21d
-    antifeatures:
-      - Tracking
-
   - versionName: 0.16.6
     versionCode: 16061
     commit: v0.16.6-fdroid
@@ -154,19 +137,6 @@ Builds:
     antifeatures:
       - Tracking
 
-  - versionName: 0.16.6
-    versionCode: 16062
-    commit: v0.16.6-fdroid
-    subdir: app
-    gradle:
-      - __32bit
-    rm:
-      - .gitsecret/keys/random_seed
-    prebuild: sed -r "s:29.0.1:29.0.2:" -i build.gradle
-    ndk: r21d
-    antifeatures:
-      - Tracking
-
 MaintainerNotes: |-
     +0: - (upstream)
     +1: armv7 (CV)