Fix instructions having extra quotes

Author: alexcrichton

crates/assert-instr-macro/src/lib.rs

@@ -131,7 +131,7 @@ pub fn assert_instr(
 
             ::stdsimd_test::assert(#shim_name as usize,
                                    stringify!(#shim_name),
-                                   stringify!(#instr));
+                                   #instr);
         }
     }.into();
     // why? necessary now to get tests to work?

crates/stdsimd-test/src/lib.rs

@@ -371,16 +371,6 @@ fn normalize(symbol: &str) -> String {
 /// This asserts that the function at `fnptr` contains the instruction
 /// `expected` provided.
 pub fn assert(fnptr: usize, fnname: &str, expected: &str) {
-    // The string in expected is surrounded by '"', strip these:
-    let expected = {
-        assert!(
-            expected.len() > 2
-                && expected.starts_with('"')
-                && expected.ends_with('"')
-        );
-        expected.get(1..expected.len() - 1)
-            .expect("expected must be a '\"' delimited string, e.g., \"nop\"")
-    };
     let mut fnname = fnname.to_string();
     let functions = get_functions(fnptr, &mut fnname);
     assert_eq!(functions.len(), 1);