wheels: get 'tileiras' from system install, not 'cuda-toolkit' wheels

dependencies.yaml

@@ -429,23 +429,14 @@ dependencies:
           - libcusolver-dev
           - libcusparse-dev
           - libnvjitlink-dev
+  # NOTE: 'tileiras' is needed too, but in CI that's provided by a system-installed CTK.
   cutile_python:
     specific:
       - output_types: conda
         matrices:
           - matrix:
               cuda: "12.*"
             packages:
-          - matrix:
-              cuda: "13.3"
-            packages:
-              - cutile-python
-              - cuda-tileiras
-          - matrix:
-              cuda: "13.*"
-            packages:
-              - cutile-python
-              - cuda-tileiras
           - matrix:
             packages:
               - cutile-python
@@ -455,22 +446,15 @@ dependencies:
           - matrix:
               cuda: "12.*"
             packages:
-          - matrix:
-              cuda: "13.3"
-            packages:
-              - cuda-tile
-              - cuda-toolkit[tileiras]==13.3.*
           - matrix:
               cuda: "13.*"
             packages:
               - &cutile_python_cu13 cuda-tile
-              - &cutile_toolkit_cu13 cuda-toolkit[tileiras]==13.*
           # if no matching matrix selectors passed, list the CUDA 13 requirement
           # (as a source of documentation in the generated pyproject.toml)
           - matrix:
             packages:
               - *cutile_python_cu13
-              - *cutile_toolkit_cu13
   cuda_wheels:
     specific:
       # cuVS needs 'nvJitLink>={whatever-cuvs-was-built-against}' at runtime, and mixing

python/libcuvs/pyproject.toml

@@ -84,7 +84,6 @@ build-backend = "scikit_build_core.build"
 requires = [
     "cmake>=4.0",
     "cuda-tile",
-    "cuda-toolkit[tileiras]==13.*",
     "libkvikio==26.10.*,>=0.0.0a0",
     "libraft==26.10.*,>=0.0.0a0",
     "librmm==26.10.*,>=0.0.0a0",