[FIR] Drop visualizer module

This module was created to compare type resolve in K1 and K2. But
overall, these tests contain a lot of bugs, and it is quite hard
to use it.

plugins/pill/generate-all-tests/build.gradle.kts

@@ -10,7 +10,6 @@ val depenencyProjects = arrayOf(
     ":compiler:test-infrastructure",
     ":compiler:tests-common-new",
     ":compiler:tests-for-compiler-generator",
-    ":compiler:visualizer",
     ":js:js.tests",
     ":compiler:tests-java8",
     ":core:descriptors.runtime",