fix duplication from \#231

competencies.md

@@ -456,20 +456,6 @@ handling/documenting dependencies with other packages/libraries. It sometimes
 requires knowledge of using build systems to enable interoperability with other
 systems.
 
-<!-- Adapting to the software life-cycle -->
-\skillsection{SWLC}
-
-The traditional software life-cycle defines the stages that form the process of building a piece of software.
-Initial development generally involves a creative process where requirements are gathered and analysed,
-followed by a formulation of a plan to fulfil them that is finally implemented.
-This is then followed by testing that things work as expected and that they continue to do so into the future.
-Often the development is iterated.
-We emphasise that the life-cycle as described here is not complete,
-as it includes periods of software maintenance and software retirement.
-Additionally, the research software life-cycle extends the traditional life-cycle
-with a \gls{software-publication} stage.
-The RSE should be aware of this life-cycle
-and be able to predict and cater to the changing needs of software as it moves through the stages.
 
 <!-- Use repositories -->
 \skillsection{SWREPOS}