[ci.yaml] Remove explicit caches (#5434)

diff --git a/.ci.yaml b/.ci.yaml
index 14772f4..a8fa7a5 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -11,9 +11,6 @@
 platform_properties:
   linux:
     properties:
-      caches: >-
-        [
-        ]
       dependencies: >
         [
           {"dependency": "curl"}
@@ -22,11 +19,6 @@
       os: Linux
   windows:
     properties:
-      caches: >-
-        [
-          {"name": "vsbuild", "path": "vsbuild"},
-          {"name": "pub_cache", "path": ".pub-cache"}
-        ]
       dependencies: >
         [
           {"dependency": "certs"}