[LL FIR] Remove unused "multi module lazy resolve" test data

- The test `AbstractFirMultiModuleLazyResolveTest` which used this test
  data was moved to `intellij` with the following commit: https://github.com/JetBrains/kotlin/commit/39fa2b0baf89b246348b1e9c33cfebfc3068c014
- In `intellij`, the test was later deleted with the following commit: https://github.com/JetBrains/intellij-community/commit/042a50dcdff50b0771e73c6948b020a5366ef137#diff-74605de26ac0b4a2a65e53e919001d51199769822a46620ac34ba7e08e85f5e0

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/dependency/a/KtDeclaration.java

@@ -1,5 +0,0 @@
-package a;
-
-public interface KtDeclaration extends KtElement {
-
-}

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/dependency/a/KtElement.kt

@@ -1,4 +0,0 @@
-package a
-
-interface KtElement : KtPureElement {
-}

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/dependency/a/KtFile.kt

@@ -1,3 +0,0 @@
-package  a
-
-open class KtFile

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/dependency/a/KtPureElement.java

@@ -1,6 +0,0 @@
-package a;
-
-public interface KtPureElement {
-    KtFile getContainingKtFile();
-}
-

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/expected.txt

@@ -1,5 +0,0 @@
-FILE: main.kt
-    public final val R|a/KtElement|.fqNameWithoutCompanions: R|a/KtFile|
-        public get(): R|a/KtFile| {
-            ^ this@R|/fqNameWithoutCompanions|.R|a/KtPureElement.containingKtFile|
-        }

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/main/main.kt

@@ -1,4 +0,0 @@
-import a.*
-
-val KtDeclaration.fqNameWithoutCompanions: KtFile
-    get() = containingKtFile

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/javaExtendsKotlinExtendsJava/structure.json

@@ -1,8 +0,0 @@
-{
-  "modules" : [
-    { "name": "main", "dependsOn": ["dependency"] },
-    { "name": "dependency" }
-  ],
-  "fileToResolve": { "module": "main", "file": "main.kt" },
-  "fails": true
-}

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/dependency/dependency.kt

@@ -1,8 +0,0 @@
-interface A
-
-interface X : A
-interface Y : A
-
-interface F : Y, X
-interface G : Y, X
-

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/expected.txt

@@ -1,16 +0,0 @@
-FILE: main.kt
-    public final fun R|Y|.test(): R|kotlin/String?| {
-        lval a: R|kotlin/Int| = when (this@R|/test|) {
-            ($subj$ is R|F|) ->  {
-                Int(1)
-            }
-            ($subj$ is R|G|) ->  {
-                Int(2)
-            }
-            else ->  {
-                ^test Null(null)
-            }
-        }
-
-        ^test Null(null)
-    }

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/main/main.kt

@@ -1,8 +0,0 @@
-fun Y.test(): String? {
-    val a = when (this) {
-        is F -> 1
-        is G -> 2
-        else -> return null
-    }
-    return null
-}

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/structure.json

@@ -1,7 +0,0 @@
-{
-  "modules" : [
-    { "name": "main", "dependsOn": ["dependency"] },
-    { "name": "dependency" }
-  ],
-  "fileToResolve": { "module": "main", "file": "main.kt" }
-}