remove some more missing details

src/bin/std_misc_channels.rs

@@ -1,6 +1,6 @@
 // ./src/std_misc/channels.md
 
-
+/*
 use std::sync::mpsc::{Sender, Receiver};
 use std::sync::mpsc;
 use std::thread;
@@ -48,8 +48,9 @@ fn part0() {
     // Show the order in which the messages were sent
     println!("{:?}", ids);
 }
+*/
 
 pub fn main() {
-	part0();
+	// part0();
 }
 

src/bin/std_misc_threads_testcase_mapreduce.rs

@@ -1,6 +1,6 @@
 // ./src/std_misc/threads/testcase_mapreduce.md
 
-
+/*
 use std::thread;
 
 // This is the `main` thread
@@ -92,10 +92,10 @@ fn part0() {
 
     println!("Final sum result: {}", final_result);
 }
-
+*/
 
 
 pub fn main() {
-	part0();
+	// part0();
 }
 

src/bin/variable_bindings_scope.rs

@@ -15,7 +15,7 @@ fn part0() {
     // End of the block
 
     // Error! `short_lived_binding` doesn't exist in this scope
-    println!("outer short: {}", short_lived_binding);
+    // println!("outer short: {}", short_lived_binding);
     // FIXME ^ Comment out this line
 
     println!("outer long: {}", long_lived_binding);