.zshrc: Use Node.js from Homebrew instead of nvm

One less dynamic thing needed to source and manage during shell init.

.zshrc

@@ -48,6 +48,10 @@ if [[ "$OSTYPE" =~ ^darwin.*$ ]]; then
     export GEM_HOME=~/.gem/ruby/2.5.1
     export GEM_PATH=~/.gem/ruby/2.5.1
     PATH=$PATH:~/.gem/ruby/2.5.1/bin
+
+    # Use node@8 from Homebrew instead of NVM
+    PATH=$PATH:/usr/local/opt/node@8/bin
+
     PATH="/usr/local/opt/postgresql@9.5/bin:$PATH"
 elif [[ "$OSTYPE" =~ ^linux.*$ ]]; then
     # noop
@@ -64,9 +68,6 @@ export PS1='[%n@%m: %~]$ '
 export EDITOR=vim
 export PAGER=less
 
-# Enable node version manager (nvm)
-[[ -s ~/.nvm/nvm.sh ]] && . ~/.nvm/nvm.sh
-
 # resize images using GraphicsMagick
 #
 #   $ smartresize DSC_0788.JPG 1920x1080 outputdir [quality]