Find Usages: Drop obsolete assertion

#KT-11895 Fixed

ChangeLog.md

@@ -178,6 +178,7 @@ Issues fixed:
 - [KT-11719](https://youtrack.jetbrains.com/issue/KT-11719) Fixed renaming of Kotlin parameters references in XML files
 - Fix several issues leading to exceptions: [KT-11579](https://youtrack.jetbrains.com/issue/KT-11579), [KT-11580](https://youtrack.jetbrains.com/issue/KT-11580), [KT-11777](https://youtrack.jetbrains.com/issue/KT-11777), [KT-11868](https://youtrack.jetbrains.com/issue/KT-11868)
 - Fixed NoSuchFieldException in Kotlin module settings on IDEA Ultimate
+- [KT-11895](https://youtrack.jetbrains.com/issue/KT-11895) Fixed exception on highlighting of injected references
 
 #### Debugger
 

idea/src/org/jetbrains/kotlin/idea/findUsages/handlers/KotlinFindUsagesHandler.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.idea.findUsages.handlers
 
 import com.intellij.find.findUsages.FindUsagesHandler
 import com.intellij.find.findUsages.FindUsagesOptions
+import com.intellij.lang.injection.InjectedLanguageManager
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiReference
@@ -80,9 +81,6 @@ abstract class KotlinFindUsagesHandler<T : PsiElement>(psiElement: T,
             override fun process(info: UsageInfo): Boolean {
                 val reference = info.reference
                 if (reference != null) {
-                    if (scopeContainingFile != null && reference.element.containingFile != scopeContainingFile) {
-                        LOG.error("findReferencesToHighight() found a reference from a different file: $reference")
-                    }
                     results.add(reference)
                 }
                 return true