Eliminate single-line ccache scripts

They used to be necessary because they selected CMake of the same architecture as the build target, but now we use native ccache, they don't do anything meaningful.

Make things consistent with other platforms and just call ccache directly in the CI script.

.gitlab-ci.yml

@@ -558,7 +558,7 @@ Ubuntu_GCC_integration_tests_asan:
     - export CCACHE_BASEDIR="$(pwd)"
     - export CCACHE_DIR="$(pwd)/ccache"
     - mkdir -pv "${CCACHE_DIR}"
-    - CI/macos/ccache_prep.sh
+    - ccache -z -M "${CCACHE_SIZE}"
     - CI/before_script.macos.sh
     - CI/macos/build.sh
     - cd build
@@ -578,7 +578,7 @@ Ubuntu_GCC_integration_tests_asan:
           s3cmd put "${dmg}" s3://openmw-artifacts/${artifactDirectory}
         done
       fi
-    - ../CI/macos/ccache_show_stats.sh
+    - ccache -svv
   artifacts:
     paths:
       - build/OpenMW-*.dmg

CI/macos/ccache_prep.sh

@@ -1,3 +0,0 @@
-#!/bin/sh -ex
-
-ccache -z -M "${CCACHE_SIZE}"

CI/macos/ccache_show_stats.sh

@@ -1,3 +0,0 @@
-#!/bin/sh -ex
-
-ccache -svv