[Fix] nvm ls, nvm alias, nvm install: error when an LTS name is invalid

nvm.sh

@@ -454,12 +454,6 @@ nvm_tree_contains_path() {
   previous_pathdir="${node_path}"
   local pathdir
   pathdir=$(dirname "${previous_pathdir}")
-
-  # get real directory in case of symbolic links
-  if [ -d "${pathdir-}" ]; then
-    pathdir="$(nvm_cd -P "${pathdir}" && pwd)"
-  fi
-
   while [ "${pathdir}" != '' ] && [ "${pathdir}" != '.' ] && [ "${pathdir}" != '/' ] &&
       [ "${pathdir}" != "${tree}" ] && [ "${pathdir}" != "${previous_pathdir}" ]; do
     previous_pathdir="${pathdir}"

test/fast/Unit tests/nvm_tree_contains_path

@@ -1,8 +1,6 @@
 #!/bin/sh
 
 cleanup () {
-  rm tmp3/tmp2
-  rmdir tmp3
   rm tmp/node
   rmdir tmp
   rm tmp2/node
@@ -16,8 +14,6 @@ mkdir -p tmp
 touch tmp/node
 mkdir -p tmp2
 touch tmp2/node
-mkdir -p tmp3
-ln -s tmp2 tmp3/
 
 [ "$(nvm_tree_contains_path 2>&1)" = "both the tree and the node path are required" ] || die 'incorrect error message with no args'
 [ "$(nvm_tree_contains_path > /dev/null 2>&1 ; echo $?)" = "2" ] || die 'incorrect error code with no args'
@@ -32,6 +28,4 @@ nvm_tree_contains_path tmp2 tmp2/node || die '"tmp2" should contain "tmp2/node"'
 
 nvm_tree_contains_path tmp2 tmp/node && die '"tmp2" should not contain "tmp/node"'
 
-nvm_tree_contains_path tmp2 tmp3 && die 'no idea'
-
 cleanup