fix: Use different test attribute

Author: konradkoschel

bindgen-tests/tests/expectations/tests/extern-fn-block-attrs-many.rs

@@ -1,3 +1,3 @@
-// bindgen-flags: --extern-fn-block-attrs '#[cfg_attr(windows, link(name = "<name>", kind = "raw-dylib"))]' --extern-fn-block-attrs '#[cfg_attr(not(windows), link(name = "<name>"))]'
+// bindgen-flags: --extern-fn-block-attrs '#[allow(dead_code)]' --extern-fn-block-attrs '#[cfg_attr(not(windows), link(wasm_import_module = "test-module"))]'
 
 void test_function();

bindgen-tests/tests/expectations/tests/extern-fn-block-attrs-wasm.rs

@@ -1,3 +1,3 @@
-// bindgen-flags: --extern-fn-block-attrs '#[cfg_attr(windows, link(name = "<name>", kind = "raw-dylib"))]' --wasm-import-module-name test-module
+// bindgen-flags: --extern-fn-block-attrs '#[allow(dead_code)]' --wasm-import-module-name test-module
 
 void test_function();

bindgen-tests/tests/expectations/tests/extern-fn-block-attrs.rs

@@ -1,3 +1,3 @@
-// bindgen-flags: --extern-fn-block-attrs '#[cfg_attr(windows, link(name = "<name>", kind = "raw-dylib"))]'
+// bindgen-flags: --extern-fn-block-attrs '#[allow(dead_code)]'
 
 void test_function();