Use better git defaults (#1601)

install/config/git.sh

@@ -1,15 +1,3 @@
-# Ensure git settings live under ~/.config
-mkdir -p ~/.config/git
-touch ~/.config/git/config
-
-# Set common git aliases
-git config --global alias.co checkout
-git config --global alias.br branch
-git config --global alias.ci commit
-git config --global alias.st status
-git config --global pull.rebase true
-git config --global init.defaultBranch master
-
 # Set identification from install inputs
 if [[ -n "${OMARCHY_USER_NAME//[[:space:]]/}" ]]; then
   git config --global user.name "$OMARCHY_USER_NAME"