I have the following code in a beamer:

```
\begin{frame}
\frametitle{New frame}
\begin{block}{Distorsión radial}
\begin{gather*}
\delta_{ur}(u,v)=u(k_1\cdot r^2+k_2\cdot r^4),\\
\delta_{vr}(u,v)=v(k_1\cdot r^2+k_2\cdot r^4). 
\end{gather*}
\end{block}
\end{frame}

```

That's how it looks like:
[![enter image description here](https://i.stack.imgur.com/Oc0Jk.png)](https://i.stack.imgur.com/Oc0Jk.png)

How could I remove that vertical space?

List of packages:

```
\usepackage{natbib}        
\usepackage{url}           
\usepackage[T1]{fontenc}   
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{numprint}      

\usepackage{amsmath}       
\usepackage{mathrsfs}      
\usepackage{amssymb}       
\usepackage{amsfonts}      

\usepackage{cancel}

\usepackage{etoolbox}

\usepackage{minted}
\usemintedstyle{friendly}

\usepackage{graphicx}
\usepackage{wrapfig}  

\usepackage{tikz}     

\usepackage[framemethod=TikZ]{mdframed}

\usepackage{caption}
\usepackage{subcaption}

```

Theme used: Warsaw