LSP-276 [java-lsp] Move completion to a proper module

GitOrigin-RevId: cf9eb550eb062f4057ea97250412ddf42b4c9634

Author: amaembo

features-impl/java-base/resources/META-INF/language-server/features/javaBase/lsApiJavaBaseImpl.xml

@@ -21,8 +21,6 @@
   <extensions defaultExtensionNs="com.intellij">
     <applicationService serviceInterface="com.intellij.psi.stubs.StubInconsistencyReporter"
                         serviceImplementation="com.intellij.util.indexing.diagnostic.StubInconsistencyReporterImpl"/>
-    <modcompletion.completionItemProvider language="JAVA" implementationClass="com.intellij.codeInsight.completion.modcompletion.KeywordCompletionItemProvider"/>
-    <modcompletion.completionItemProvider language="JAVA" implementationClass="com.intellij.codeInsight.completion.modcompletion.InstanceOfClassItemProvider"/>
     <langCodeStyleSettingsProvider implementation="com.intellij.ide.JavaLanguageCodeStyleSettingsProvider"/>
     <lang.formatter language="JAVA" implementationClass="com.intellij.lang.java.JavaFormattingModelBuilder"/>
     <codeStyle.ReferenceAdjuster language="JAVA" implementationClass="com.intellij.psi.impl.source.codeStyle.JavaReferenceAdjuster"/>