Fix compatibility issues related to parameter and its stub.

python/psi-api/src/com/jetbrains/python/psi/PyParameter.java

@@ -1,7 +1,6 @@
 // Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.jetbrains.python.psi;
 
-import com.jetbrains.python.PyNames;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -29,15 +28,6 @@ public interface PyParameter extends PyElement {
 
   boolean hasDefaultValue();
 
-  /**
-   * @deprecated Use {@link PyParameter#getDefaultValueText()} instead.
-   * This method will be removed in 2018.2.
-   */
-  @Deprecated
-  default boolean hasDefaultNoneValue() {
-    return PyNames.NONE.equals(getDefaultValueText());
-  }
-
   /**
    * @apiNote This method will be marked as abstract in 2018.2.
    */

python/psi-api/src/com/jetbrains/python/psi/stubs/PyNamedParameterStub.java

@@ -6,7 +6,6 @@
 package com.jetbrains.python.psi.stubs;
 
 import com.intellij.psi.stubs.NamedStub;
-import com.jetbrains.python.PyNames;
 import com.jetbrains.python.psi.PyNamedParameter;
 import org.jetbrains.annotations.Nullable;
 
@@ -23,15 +22,6 @@ public interface PyNamedParameterStub extends NamedStub<PyNamedParameter>, PyAnn
     return getDefaultValueText() != null;
   }
 
-  /**
-   * @deprecated Use {@link PyNamedParameterStub#getDefaultValueText()} instead.
-   * This method will be removed in 2018.2.
-   */
-  @Deprecated
-  default boolean hasDefaultNoneValue() {
-    return PyNames.NONE.equals(getDefaultValueText());
-  }
-
   @Nullable
   default String getDefaultValueText() {
     return null;

python/src/com/jetbrains/python/psi/impl/stubs/PyNamedParameterStubImpl.java

@@ -48,7 +48,6 @@ public class PyNamedParameterStubImpl extends StubBase<PyNamedParameter> impleme
                                   boolean isPositionalContainer,
                                   boolean isKeywordContainer,
                                   boolean hasDefaultValue,
-                                  boolean hasDefaultNoneValue,
                                   @Nullable String typeCommentAnnotation,
                                   @Nullable String annotation,
                                   StubElement parent,
@@ -56,7 +55,7 @@ public class PyNamedParameterStubImpl extends StubBase<PyNamedParameter> impleme
     this(name,
          isPositionalContainer,
          isKeywordContainer,
-         hasDefaultNoneValue ? PyNames.NONE : hasDefaultValue ? PyNames.ELLIPSIS : null,
+         hasDefaultValue ? PyNames.ELLIPSIS : null,
          typeCommentAnnotation,
          annotation,
          parent,