Remove RobolectricTestRunner.getConfig(Method)

This method is deprecated, and had an alternative provided in its comment.

robolectric/src/main/java/org/robolectric/RobolectricTestRunner.java

@@ -50,7 +50,6 @@
 import org.robolectric.pluginapi.config.ConfigurationStrategy;
 import org.robolectric.pluginapi.config.ConfigurationStrategy.Configuration;
 import org.robolectric.pluginapi.config.GlobalConfigProvider;
-import org.robolectric.plugins.HierarchicalConfigurationStrategy.ConfigurationImpl;
 import org.robolectric.util.Logger;
 import org.robolectric.util.PerfStatsCollector;
 import org.robolectric.util.ReflectionHelpers;
@@ -411,42 +410,9 @@ public static AndroidManifest createAndroidManifest(ManifestIdentifier manifestI
         manifestIdentifier.getApkFile());
   }
 
-  /**
-   * Compute the effective Robolectric configuration for a given test method.
-   *
-   * <p>Configuration information is collected from package-level {@code robolectric.properties}
-   * files and {@link Config} annotations on test classes, superclasses, and methods.
-   *
-   * <p>Custom TestRunner subclasses may wish to override this method to provide alternate
-   * configuration.
-   *
-   * @param method the test method
-   * @return the effective Robolectric configuration for the given test method
-   * @deprecated Provide an implementation of {@link javax.inject.Provider<Config>} instead. This
-   *     method will be removed in Robolectric 4.3.
-   * @since 2.0
-   * @see <a href="http://robolectric.org/migrating/#migrating-to-40">Migration Notes</a> for more
-   *     details.
-   */
-  @Deprecated
-  public Config getConfig(Method method) {
-    throw new UnsupportedOperationException();
-  }
-
   /** Calculate the configuration for a given test method. */
   private Configuration getConfiguration(Method method) {
-    Configuration configuration =
-        configurationStrategy.getConfig(getTestClass().getJavaClass(), method);
-
-    // in case #getConfig(Method) has been overridden...
-    try {
-      Config config = getConfig(method);
-      ((ConfigurationImpl) configuration).put(Config.class, config);
-    } catch (UnsupportedOperationException e) {
-      // no problem
-    }
-
-    return configuration;
+    return configurationStrategy.getConfig(getTestClass().getJavaClass(), method);
   }
 
   /**

robolectric/src/test/java/org/robolectric/RobolectricTestRunnerTest.java

@@ -42,11 +42,9 @@
 import org.junit.runner.notification.RunNotifier;
 import org.junit.runners.JUnit4;
 import org.junit.runners.MethodSorters;
-import org.junit.runners.model.FrameworkMethod;
 import org.robolectric.RobolectricTestRunner.RobolectricFrameworkMethod;
 import org.robolectric.android.internal.AndroidTestEnvironment;
 import org.robolectric.annotation.Config;
-import org.robolectric.annotation.Config.Implementation;
 import org.robolectric.annotation.experimental.LazyApplication;
 import org.robolectric.annotation.experimental.LazyApplication.LazyLoad;
 import org.robolectric.config.ConfigurationRegistry;
@@ -142,20 +140,6 @@ public void testsWithUnsupportedSdkShouldBeIgnored() throws Exception {
         .inOrder();
   }
 
-  @Test
-  public void supportsOldGetConfigUntil4dot3() throws Exception {
-    Implementation overriddenConfig = Config.Builder.defaults().build();
-    List<FrameworkMethod> children = new SingleSdkRobolectricTestRunner(TestWithTwoMethods.class) {
-      @Override
-      public Config getConfig(Method method) {
-        return overriddenConfig;
-      }
-    }.getChildren();
-    Config config = ((RobolectricFrameworkMethod) children.get(0))
-        .getConfiguration().get(Config.class);
-    assertThat(config).isSameInstanceAs(overriddenConfig);
-  }
-
   @Test
   public void failureInResetterDoesntBreakAllTests() throws Exception {
     RobolectricTestRunner runner =