Provide default implementation for Annotations.getUseSiteTargetedAnnotations

After this commit, it's overridden only in AnnotationsImpl and
CompositeAnnotations.

Note that although FilteredAnnotations did have a non-trivial
implementation, that class was only used in circumstances where
annotations with use-site targets could not be of any use, so it's safe
to return empty list there now. One could argue that the new semantics
makes more sense: filter "standard" annotations, but don't touch those
with use-site targets because they are not applied to this element
directly, thus should likely not be affected by the filtering

compiler/frontend/src/org/jetbrains/kotlin/descriptors/annotations/AnnotationSplitter.kt

@@ -146,7 +146,6 @@ class AnnotationSplitter(
         override fun isEmpty() = annotations.isEmpty()
         override fun hasAnnotation(fqName: FqName) = annotations.hasAnnotation(fqName)
         override fun findAnnotation(fqName: FqName) = annotations.findAnnotation(fqName)
-        override fun getUseSiteTargetedAnnotations() = annotations.getUseSiteTargetedAnnotations()
         override fun iterator() = annotations.iterator()
         override fun toString() = annotations.toString()
     }

compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyAnnotations.kt

@@ -18,7 +18,6 @@ package org.jetbrains.kotlin.resolve.lazy.descriptors
 
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationWithTarget
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtAnnotationEntry
@@ -59,8 +58,6 @@ class LazyAnnotations(
         LazyAnnotationDescriptor(c, entry)
     }
 
-    override fun getUseSiteTargetedAnnotations(): List<AnnotationWithTarget> = emptyList()
-
     override fun iterator(): Iterator<AnnotationDescriptor> = annotationEntries.asSequence().map(annotation).iterator()
 
     override fun forceResolveAllContents() {