[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.

compiler/tests-for-compiler-generator/build.gradle.kts

@@ -17,7 +17,6 @@ dependencies {
     testImplementation(projectTests(":compiler:fir:raw-fir:light-tree2fir"))
     testImplementation(projectTests(":compiler:fir:fir2ir"))
     testImplementation(projectTests(":compiler:fir:analysis-tests:legacy-fir-tests"))
-    testImplementation(projectTests(":compiler:visualizer"))
     testImplementation(projectTests(":js:js.tests"))
     testImplementation(projectTests(":generators:test-generator"))
 }