Drop unmaintained transform dialect tests

tests/transform_dialect/cpu/BUILD.bazel

@@ -14,20 +14,12 @@ package(
 iree_lit_test_suite(
     name = "lit",
     srcs = [
-        "contraction-packing.mlir",
-        "contraction-packing-and-dispatch.mlir",
-        # DISABLED: incorrectly assuming default flag values.
-        # "eltwise_reduction_eltwise.mlir",
-        "fold_tensor_slice_into_transfer.mlir",
-        # DISABLED: incorrectly assuming default flag values.
-        # "matmul.mlir",
         "matmul_library_call.mlir",
     ],
     cfg = "//tests:lit.cfg.py",
     # transform dialect spec files are MLIR files that specify a transformation,
     # they need to be included as data.
     data = [
-        "matmul_codegen_default_spec.mlir",
         "transform_library.mlir",
     ],
     tags = [
@@ -38,9 +30,7 @@ iree_lit_test_suite(
         "noubsan",
     ],
     tools = [
-        "//tools:iree-benchmark-module",
         "//tools:iree-compile",
-        "//tools:iree-opt",
         "//tools:iree-run-module",
         "@llvm-project//lld",
         "@llvm-project//llvm:FileCheck",

tests/transform_dialect/cpu/CMakeLists.txt

@@ -14,19 +14,13 @@ iree_lit_test_suite(
   NAME
     lit
   SRCS
-    "contraction-packing-and-dispatch.mlir"
-    "contraction-packing.mlir"
-    "fold_tensor_slice_into_transfer.mlir"
     "matmul_library_call.mlir"
   TOOLS
     ${IREE_LLD_TARGET}
     FileCheck
-    iree-benchmark-module
     iree-compile
-    iree-opt
     iree-run-module
   DATA
-    matmul_codegen_default_spec.mlir
     transform_library.mlir
   LABELS
     "hostonly"