Removes slide on HEAD

I don't think it needs its own slide now that I have introduced the
slide outlining the different types of reference

main.latex

@@ -653,23 +653,6 @@
 	}
 \end{frame}
 
-\begin{frame}
-	\frametitle{References}
-	\framesubtitle{HEAD}
-	\begin{itemize}
-		\item The HEAD references is directly in the \mintinline{bash}{.git} folder.
-		\item It refers to the ``current" commit. It is how git knows where you are.
-		\item This normally refers to a branch's head commit.
-		\item In some situations it will refer to a commit directly.
-	\end{itemize}
-	\note{%
-		Not sure why it is not in refs folder
-
-		If it refers directly to a commit, the repository is in what is called a ``detached head"
-		state.
-	}
-\end{frame}
-
 \begin{frame}
 	\frametitle{Branches}
 
@@ -761,12 +744,15 @@
 	\begin{minted}{bash}
 	# List Branches
 	git branch # -v adds more info
+
 	# Create a branch called test
 	git branch test # or
 	cp ~/.git/refs/heads/master ~/.git/refs/heads/test
+
 	# Switch to new branch
 	git switch test # or
 	git checkout test
+
 	# Create and switch in one go
 	git switch -c test # or
 	git checkout -b test