Remove unused getConfigSpec methods from ApiDemos sample code

At one time during the development of GLSurfaceView, the
GLSurfaceView.Renderer interface had a getConfigSpec method that was used to
select the frame buffer format. This method was removed from the
Renderer interface before GLSurfaceView became a public API, but
the sample code still defined these now-unused methods.

To reduce the chance of confusing a developer who uses the sample code,
this change removes the dead, no-longer-called getConfigSpec
implementations from the three samples.

See GLSurfaceView.setEGLConfigChooser for the replacement
technique.

samples/ApiDemos/src/com/example/android/apis/graphics/CubeRenderer.java

@@ -64,29 +64,6 @@ class CubeRenderer implements GLSurfaceView.Renderer {
         mAngle += 1.2f;
     }
 
-    public int[] getConfigSpec() {
-        if (mTranslucentBackground) {
-                // We want a depth buffer and an alpha buffer
-                int[] configSpec = {
-                        EGL10.EGL_RED_SIZE,      8,
-                        EGL10.EGL_GREEN_SIZE,    8,
-                        EGL10.EGL_BLUE_SIZE,     8,
-                        EGL10.EGL_ALPHA_SIZE,    8,
-                        EGL10.EGL_DEPTH_SIZE,   16,
-                        EGL10.EGL_NONE
-                };
-                return configSpec;
-            } else {
-                // We want a depth buffer, don't care about the
-                // details of the color buffer.
-                int[] configSpec = {
-                        EGL10.EGL_DEPTH_SIZE,   16,
-                        EGL10.EGL_NONE
-                };
-                return configSpec;
-            }
-    }
-
     public void onSurfaceChanged(GL10 gl, int width, int height) {
          gl.glViewport(0, 0, width, height);
 

samples/ApiDemos/src/com/example/android/apis/graphics/TouchRotateActivity.java

@@ -134,16 +134,6 @@ class TouchSurfaceView extends GLSurfaceView {
             mCube.draw(gl);
         }
 
-        public int[] getConfigSpec() {
-            // We want a depth buffer, don't care about the
-            // details of the color buffer.
-            int[] configSpec = {
-                    EGL10.EGL_DEPTH_SIZE,   16,
-                    EGL10.EGL_NONE
-            };
-            return configSpec;
-        }
-
         public void onSurfaceChanged(GL10 gl, int width, int height) {
              gl.glViewport(0, 0, width, height);
 

samples/ApiDemos/src/com/example/android/apis/graphics/spritetext/SpriteTextRenderer.java

@@ -50,16 +50,6 @@ public class SpriteTextRenderer implements GLSurfaceView.Renderer{
         mLabelPaint.setARGB(0xff, 0x00, 0x00, 0x00);
     }
 
-    public int[] getConfigSpec() {
-        // We don't need a depth buffer, and don't care about our
-        // color depth.
-        int[] configSpec = {
-                EGL10.EGL_DEPTH_SIZE, 0,
-                EGL10.EGL_NONE
-        };
-        return configSpec;
-    }
-
     public void onSurfaceCreated(GL10 gl, EGLConfig config) {
         /*
          * By default, OpenGL enables features that improve quality