Remove legacy build instructions

BUILDING.md

@@ -51,36 +51,6 @@ _On Windows:_
     preparetests.cmd
     gradlew connectedAndroidTest
 
-Some tests will fail due to existing issues.
-
-## _Eclipse and Ant_
-
-Versions up to 5.4.1 may be built as a library project using Android NDK r10e
-and imported into Eclipse using File->Import->Existing Projects into Workspace.
-
-On 64-bit Ubuntu, you may need to install the `ia32-libs` 32-bit compatibility 
-library.
-
-To build tess-two, run the following commands in the terminal:
-
-    git clone git://github.com/rmtheis/tess-two tess
-    cd tess
-    git checkout tags/5.4.1
-    cd tess-two
-    ndk-build
-    android update project --path .
-    ant release
-
-To build eyes-two, additionally run the following:
-
-    cd ..
-    cd eyes-two
-    ndk-build
-    android update project --path .
-    ant release
-
-If you're using ProGuard for code shrinking and obfuscation, manually add the 
-ProGuard keep options from the `proguard-rules.pro` file to your app's ProGuard
-config in order to retain fields and methods used by native code.
+Note that some tests will fail due to existing issues.
 
 [aar-import]:http://stackoverflow.com/a/28816265/667810