Drop throws usages that looks redundant

Probably appeared after j2k-conversion

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/stubBuilder/KotlinClsStubBuilder.kt

@@ -48,7 +48,6 @@ public open class KotlinClsStubBuilder : ClsStubBuilder() {
         return doBuildFileStub(file)
     }
 
-    throws(javaClass<ClsFormatException>())
     fun doBuildFileStub(file: VirtualFile): PsiFileStub<JetFile>? {
         val kotlinBinaryClass = KotlinBinaryClassCache.getKotlinBinaryClass(file)
         val header = kotlinBinaryClass.getClassHeader()

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JetFixtureCompletionBaseTestCase.kt

@@ -32,7 +32,6 @@ public abstract class JetFixtureCompletionBaseTestCase : JetLightCodeInsightFixt
 
     protected open fun defaultInvocationCount(): Int = 0
 
-    throws(javaClass<Exception>())
     public open fun doTest(testPath: String) {
         setUpFixture(testPath)
 

idea/tests/org/jetbrains/kotlin/idea/refactoring/InplaceRenameTest.kt

@@ -77,7 +77,6 @@ public class InplaceRenameTest : LightPlatformCodeInsightTestCase() {
             templateManager.setTemplateTesting(true)
 
             object : WriteCommandAction.Simple<Any>(project) {
-                throws(javaClass<Throwable>())
                 override fun run() {
                     handler.invoke(project, editor, file, dataContext)
                 }
@@ -88,7 +87,6 @@ public class InplaceRenameTest : LightPlatformCodeInsightTestCase() {
             val range = state!!.getCurrentVariableRange()
             assert(range != null)
             object : WriteCommandAction.Simple<Any>(project) {
-                throws(javaClass<Throwable>())
                 override fun run() {
                     editor.getDocument().replaceString(range!!.getStartOffset(), range!!.getEndOffset(), newName)
                 }