Get rid of some NOTEs.

src/compiletest/compiletest.rs

@@ -11,7 +11,6 @@
 #[crate_type = "bin"];
 
 #[allow(non_camel_case_types)];
-#[allow(unrecognized_lint)]; // NOTE: remove after snapshot
 #[deny(warnings)];
 
 extern mod extra;

src/librustc/middle/cfg/construct.rs

@@ -225,7 +225,7 @@ impl CFGBuilder {
                 // Note that `break` and `loop` statements
                 // may cause additional edges.
 
-                // NOTE: Is the condition considered part of the loop?
+                // Is the condition considered part of the loop?
                 let loopback = self.add_dummy_node([pred]);           // 1
                 let cond_exit = self.expr(cond, loopback);            // 2
                 let expr_exit = self.add_node(expr.id, [cond_exit]);  // 3

src/libstd/rt/io/flate.rs

@@ -10,7 +10,7 @@
 
 //! Some various other I/O types
 
-// NOTE: These ultimately belong somewhere else
+// FIXME(#3660): should move to libextra
 
 use prelude::*;
 use super::*;