Update tests that don't run on my platform

Author: petrochenkov

src/test/ui/error-codes/E0161.stderr

@@ -1,7 +1,7 @@
 error[E0583]: file not found for module `not_a_real_file`
   --> $DIR/mod_file_not_exist.rs:3:5
    |
-LL | mod not_a_real_file; //~ ERROR file not found for module `not_a_real_file`
+LL | mod not_a_real_file;
    |     ^^^^^^^^^^^^^^^
    |
    = help: name the file either not_a_real_file.rs or not_a_real_file/mod.rs inside the directory "$DIR"

src/test/ui/parser/mod_file_not_exist.stderr

@@ -1,13 +1,13 @@
 error: statics with a custom `#[link_section]` must be a simple list of bytes on the wasm target with no extra levels of indirection such as references
   --> $DIR/wasm-custom-section-relocations.rs:4:1
    |
-LL | pub static A: &[u8] = &[1]; //~ ERROR: no extra levels of indirection
+LL | pub static A: &[u8] = &[1];
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: statics with a custom `#[link_section]` must be a simple list of bytes on the wasm target with no extra levels of indirection such as references
   --> $DIR/wasm-custom-section-relocations.rs:13:1
    |
-LL | pub static D: &usize = &C; //~ ERROR: no extra levels of indirection
+LL | pub static D: &usize = &C;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to 2 previous errors