gitlab ci: disable caching

Should be superseded by https://github.com/termux/termux-packages/pull/3276.

.gitlab-ci.yml

@@ -8,11 +8,7 @@ stages:
   - build
   - deploy
 
-## Use custom install directory (/data) so we will be
-## able to cache it.
 before_script:
-  - mkdir -p ./build-data/data/com.termux/files/usr
-  - mount --bind ./build-data /data
   - cp -a /home/builder/.android $HOME/.android
   - chown -R $(id -u):$(id -g) $HOME/.android
 
@@ -38,37 +34,21 @@ build-aarch64:
   <<: *build_job
   variables:
     TERMUX_ARCH: aarch64
-  cache:
-    key: aarch64-data
-    paths:
-      - build-data
 
 ## Building packages for ARM.
 build-arm:
   <<: *build_job
   variables:
     TERMUX_ARCH: arm
-  cache:
-    key: arm-data
-    paths:
-      - build-data
 
 ## Building packages for i686.
 build-i686:
   <<: *build_job
   variables:
     TERMUX_ARCH: i686
-  cache:
-    key: i686-data
-    paths:
-      - build-data
 
 ## Building packages for x86_64.
 build-x86_64:
   <<: *build_job
   variables:
     TERMUX_ARCH: x86_64
-  cache:
-    key: x86_64-data
-    paths:
-      - build-data