Clean some config stuff up

Author: antoyo

build_system/src/config.rs

@@ -352,15 +352,6 @@ impl ConfigInfo {
             None => return Err("no host found".to_string()),
         };
 
-        if self.target_triple.is_empty() {
-            // TODO: set target triple.
-            // TODO: why do we even need to set target_triple?
-            // It seems to only be needed for the linker (we could add an environment variable to
-            // remove this need) and the sysroot (perhaps we could find another way to find it).
-            // TODO TODO: seems like we would still need OVERWRITE_TARGET_TRIPLE when using a
-            // json spec file.
-            // ====> maybe not since we specify both --target and --target-triple.
-        }
         if self.target_triple.is_empty() {
             self.target_triple = self.host_triple.clone();
         }
@@ -374,7 +365,6 @@ impl ConfigInfo {
             if self.target_triple.is_empty() {
                 return Err("Unknown non-native platform".to_string());
             }
-            // TODO: check if this is still needed.
             linker = Some(format!("-Clinker={}-gcc", self.target_triple));
             self.run_in_vm = true;
         }