Stop passing site cfg files via --param to llvm-lit.

This has been unnecessary since https://reviews.llvm.org/D37756.

https://reviews.llvm.org/D37838 removed it for llvm.

This removes it from clang, lld, clang-tools-extra (and the GN build).

No intended behavior change.

Differential Revision: https://reviews.llvm.org/D77585

utils/gn/secondary/clang-tools-extra/clangd/test/BUILD.gn

@@ -21,8 +21,9 @@ write_lit_config("lit_site_cfg") {
   output = clangd_lit_site_cfg_file
 
   extra_values = [
-    "CMAKE_CURRENT_BINARY_DIR=" + rebase_path(
-            get_label_info("//clang-tools-extra/clangd/test", "target_out_dir")),
+    "CMAKE_CURRENT_BINARY_DIR=" +
+        rebase_path(get_label_info("//clang-tools-extra/clangd/test",
+                                   "target_out_dir")),
     "CMAKE_CURRENT_SOURCE_DIR=" +
         rebase_path("//clang-tools-extra/clangd/test"),
 
@@ -91,6 +92,10 @@ action("check-clangd") {
   }
   args = [
     "-sv",
+
+    # clangd doesn't put unittest configs in test/unit like every other project.
+    # Because of that, this needs to pass two folders here, while every other
+    # project only needs to pass CMAKE_CURRENT_BINARY_DIR.
     rebase_path(get_path_info(clangd_lit_site_cfg_file, "dir"), root_out_dir),
     rebase_path(get_path_info(clangd_lit_unit_site_cfg_file, "dir"),
                 root_out_dir),

utils/gn/secondary/clang-tools-extra/test/BUILD.gn

@@ -90,12 +90,6 @@ action("check-clang-tools") {
   }
   args = [
     "-sv",
-    "--param",
-    "clang_site_config=" +
-        rebase_path(clang_tools_extra_lit_site_cfg_file, root_out_dir),
-    "--param",
-    "clang_unit_site_config=" +
-        rebase_path(clang_tools_extra_lit_unit_site_cfg_file, root_out_dir),
     rebase_path(".", root_out_dir),
   ]
   outputs = [ "$target_gen_dir/run-lit" ]  # Non-existing, so that ninja runs it

utils/gn/secondary/clang/test/BUILD.gn

@@ -189,11 +189,6 @@ action("check-clang") {
   }
   args = [
     "-sv",
-    "--param",
-    "clang_site_config=" + rebase_path(clang_lit_site_cfg_file, root_out_dir),
-    "--param",
-    "clang_unit_site_config=" +
-        rebase_path(clang_lit_unit_site_cfg_file, root_out_dir),
     rebase_path(".", root_out_dir),
   ]
   outputs = [ "$target_gen_dir/run-lit" ]  # Non-existing, so that ninja runs it

utils/gn/secondary/lld/test/BUILD.gn

@@ -110,11 +110,6 @@ action("check-lld") {
   }
   args = [
     "-sv",
-    "--param",
-    "lld_site_config=" + rebase_path(lld_lit_site_cfg_file, root_out_dir),
-    "--param",
-    "lld_unit_site_config=" +
-        rebase_path(lld_lit_unit_site_cfg_file, root_out_dir),
     rebase_path(".", root_out_dir),
   ]
   outputs = [ "$target_gen_dir/run-lit" ]  # Non-existing, so that ninja runs it

utils/gn/secondary/llvm/test/BUILD.gn

@@ -289,11 +289,6 @@ action("check-llvm") {
   }
   args = [
     "-sv",
-    "--param",
-    "llvm_site_config=" + rebase_path(llvm_lit_site_cfg_file, root_out_dir),
-    "--param",
-    "llvm_unit_site_config=" +
-        rebase_path(llvm_lit_unit_site_cfg_file, root_out_dir),
     rebase_path(".", root_out_dir),
   ]
   outputs = [ "$target_gen_dir/run-lit" ]  # Non-existing, so that ninja runs it