Fix "rewrite at slice LEXICAL_SCOPE" during callable reference resolution

Following the TODO in CallableReferencesResolutionUtils.kt, delete the
suspicious scope and use the new resolution process with the qualifier which
was obtained after the resolution of LHS. However, by default the tower
resolution algorithm also considers each qualifier as a class value as well,
which would be wrong here because resolution of LHS as a "value" happens
earlier in DoubleColonExpressionResolver and with slightly different rules. To
avoid that, do not mix in the "explicit receiver" scope tower processor when
creating processors for callable reference resolution.

Also delete unused functions and classes related to deleted scope, refactor
Scopes.kt

 #KT-8596 Fixed

compiler/testData/diagnostics/tests/callableReference/resolve/kt8596.kt

@@ -0,0 +1,25 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
+
+// KT-8596 Rewrite at slice LEXICAL_SCOPE for nested class constructor reference in an argument position
+
+class K {
+    class Nested
+}
+
+fun foo(f: Any) {}
+
+fun test1() {
+    foo(K::Nested)
+}
+
+// KT-10567 Error: Rewrite at slice LEXICAL_SCOPE key: REFERENCE_EXPRESSION
+
+class Foo(val a: String, val b: String)
+
+fun test2() {
+    val prop : Foo.() -> String = if (true) {
+        Foo::a
+    } else {
+        Foo::b
+    }
+}

compiler/testData/diagnostics/tests/callableReference/resolve/kt8596.txt

@@ -0,0 +1,28 @@
+package
+
+public fun foo(/*0*/ f: kotlin.Any): kotlin.Unit
+public fun test1(): kotlin.Unit
+public fun test2(): kotlin.Unit
+
+public final class Foo {
+    public constructor Foo(/*0*/ a: kotlin.String, /*1*/ b: kotlin.String)
+    public final val a: kotlin.String
+    public final val b: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class K {
+    public constructor K()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final class Nested {
+        public constructor Nested()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}