- Remove rknn learner (#2842)

DESCRIPTION

@@ -152,7 +152,6 @@ Suggests:
     rex,
     rFerns,
     rgenoud,
-    rknn,
     rmarkdown,
     Rmpi,
     ROCR,

NAMESPACE

@@ -213,7 +213,6 @@ S3method(makeRLearner,classif.rFerns)
 S3method(makeRLearner,classif.randomForest)
 S3method(makeRLearner,classif.ranger)
 S3method(makeRLearner,classif.rda)
-S3method(makeRLearner,classif.rknn)
 S3method(makeRLearner,classif.rotationForest)
 S3method(makeRLearner,classif.rpart)
 S3method(makeRLearner,classif.saeDNN)
@@ -284,7 +283,6 @@ S3method(makeRLearner,regr.penalized)
 S3method(makeRLearner,regr.plsr)
 S3method(makeRLearner,regr.randomForest)
 S3method(makeRLearner,regr.ranger)
-S3method(makeRLearner,regr.rknn)
 S3method(makeRLearner,regr.rpart)
 S3method(makeRLearner,regr.rsm)
 S3method(makeRLearner,regr.rvm)
@@ -398,7 +396,6 @@ S3method(predictLearner,classif.rFerns)
 S3method(predictLearner,classif.randomForest)
 S3method(predictLearner,classif.ranger)
 S3method(predictLearner,classif.rda)
-S3method(predictLearner,classif.rknn)
 S3method(predictLearner,classif.rotationForest)
 S3method(predictLearner,classif.rpart)
 S3method(predictLearner,classif.saeDNN)
@@ -469,7 +466,6 @@ S3method(predictLearner,regr.penalized)
 S3method(predictLearner,regr.plsr)
 S3method(predictLearner,regr.randomForest)
 S3method(predictLearner,regr.ranger)
-S3method(predictLearner,regr.rknn)
 S3method(predictLearner,regr.rpart)
 S3method(predictLearner,regr.rsm)
 S3method(predictLearner,regr.rvm)
@@ -648,7 +644,6 @@ S3method(trainLearner,classif.rFerns)
 S3method(trainLearner,classif.randomForest)
 S3method(trainLearner,classif.ranger)
 S3method(trainLearner,classif.rda)
-S3method(trainLearner,classif.rknn)
 S3method(trainLearner,classif.rotationForest)
 S3method(trainLearner,classif.rpart)
 S3method(trainLearner,classif.saeDNN)
@@ -719,7 +714,6 @@ S3method(trainLearner,regr.penalized)
 S3method(trainLearner,regr.plsr)
 S3method(trainLearner,regr.randomForest)
 S3method(trainLearner,regr.ranger)
-S3method(trainLearner,regr.rknn)
 S3method(trainLearner,regr.rpart)
 S3method(trainLearner,regr.rsm)
 S3method(trainLearner,regr.rvm)

tests/testthat/test_learners_all_classif.R

@@ -92,7 +92,6 @@ test_that("learners work: classif", {
     y = as.factor(rep(c("a", "b"), each = 5))), target = "y")
   lrns = listLearnersCustom(min.task, create = TRUE)
   # FIXME: classif.boosting: Remove if bug is removed in adabag!
-  # FIXME: classif.rknn: Remove if bug is removed in rknn::rknn!
   # classif.cvglmnet does not claim to work for 1d problems
   # classif.dbnDNN, classif.evtree, classif.lqa
   # (not im mlr anymore),
@@ -112,8 +111,8 @@ test_that("learners work: classif", {
     "classif.mda",
     "classif.pamr",
     "classif.plsdaCaret",
-    "classif.rotationForest",
-    "classif.rknn")
+    "classif.rotationForest"
+  )
   lrns_sub = lrns[extractSubList(lrns, "id", simplify = TRUE) %nin% not.working]
   foo = suppressWarnings(lapply(lrns_sub, testBasicLearnerProperties,
     task = min.task,