Add inspection to remove redundant qualifier name

#KT-12134 Fixed

idea/testData/inspectionsLocal/removeRedundantQualifierName/companionOnVariable.kt

@@ -0,0 +1,14 @@
+package my.simple.name
+import my.simple.name.Foo.Companion.VARIABLE
+
+class Foo {
+    companion object {
+        const val VARIABLE = 1
+    }
+}
+
+fun main() {
+    val a = my.simple.name.Foo<caret>.VARIABLE
+    val b = my.simple.name.Foo.Companion.VARIABLE
+    val c = my.simple.name.Foo()
+}