Revert "Test x86_64-unknown-linux-gnux32"

Author: malbarbo

.travis.yml

@@ -116,7 +116,7 @@ matrix:
     - env: IMAGE=cross DEPLOY=1
       if: branch = auto
     - env: IMAGE=cross2 DEPLOY=1
-    #  if: branch = auto
+      if: branch = auto
     - env: IMAGE=dist-aarch64-linux DEPLOY=1
       if: branch = auto
     - env: IMAGE=dist-android DEPLOY=1