chore(ci); remove old KGP API builds

Author: zoobestik

.teamcity/references/BuildApiReferencesProject.kt

@@ -3,9 +3,6 @@ package references
 import BuildParams.API_COMPOSE
 import BuildParams.KGP_REFERENCE
 import jetbrains.buildServer.configs.kotlin.Project
-import references.builds.kgp.KotlinGradlePluginBuildApiReference
-import references.builds.kgp.KotlinGradlePluginBuildSearchIndex
-import references.builds.kgp.KotlinGradlePluginPrepareDokkaTemplates
 import references.builds.kotlinx.coroutines.KotlinxCoroutinesBuildApiReference
 import references.builds.kotlinx.coroutines.KotlinxCoroutinesBuildSearchIndex
 import references.builds.kotlinx.coroutines.KotlinxCoroutinesPrepareDokkaTemplates
@@ -53,16 +50,11 @@ object BuildApiReferencesProject : Project({
     buildType(BuildStdlibApiReference)
     buildType(StdlibPrepareDokkaTemplates)
 
-    buildType(KotlinGradlePluginBuildApiReference)
-    buildType(KotlinGradlePluginBuildSearchIndex)
-    buildType(KotlinGradlePluginPrepareDokkaTemplates)
-
     vcsRoot(KotlinxSerialization)
     vcsRoot(KotlinxCoroutines)
     vcsRoot(KotlinxDatetime)
     vcsRoot(KotlinxIO)
     vcsRoot(Kotlin)
-    vcsRoot(KotlinKGP)
 
     template(PrepareDokkaTemplate)