releaseTools: no-op expression cleanup

No functional change, was just reading through these and cleaning/sanitizing
them a bit while I'm here.

pkgs/build-support/release/binary-tarball.nix

@@ -51,20 +51,16 @@ stdenv.mkDerivation (
       configureFlags="--prefix=$prefix $configureFlags"
       dontAddPrefix=1
       prefix=$TMPDIR/inst$prefix
-    ''; # */
-
+    '';
 
     doDist = true;
 
-    distPhase =
-      ''
+    distPhase = ''
       mkdir -p $out/tarballs
       tar cvfj $out/tarballs/''${releaseName:-binary-dist}.tar.bz2 -C $TMPDIR/inst .
     '';
 
-
-    finalPhase =
-      ''
+    finalPhase = ''
       for i in $out/tarballs/*; do
           echo "file binary-dist $i" >> $out/nix-support/hydra-build-products
       done
@@ -74,7 +70,6 @@ stdenv.mkDerivation (
       test -n "$releaseName" && (echo "$releaseName" >> $out/nix-support/hydra-release-name)
     '';
 
-
     meta = (if args ? meta then args.meta else {}) // {
       description = "Build of a generic binary distribution";
     };

pkgs/build-support/release/debian-build.nix

@@ -88,7 +88,7 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
       done
 
       eval "$postInstall"
-    ''; # */
+    '';
 
     meta = (if args ? meta then args.meta else {}) // {
       description = "Deb package for ${diskImage.fullName}";

pkgs/build-support/release/rpm-build.nix

@@ -44,7 +44,7 @@ vmTools.buildRPM (
       for rpmdir in $extraRPMs ; do
         echo "file rpm-extra $(ls $rpmdir/rpms/*/*.rpm | grep -v 'src\.rpm' | sort | head -1)" >> $out/nix-support/hydra-build-products
       done
-    ''; # */
+    '';
 
     meta = (if args ? meta then args.meta else {}) // {
       description = "RPM package for ${diskImage.fullName}";