Removed reference to agnos.ai from executive summary

Author: jgeluk

ekg-mm/chapters-0-intro/ekg-mm-executive-summary.tex

@@ -11,5 +11,3 @@ \chapter{Executive Summary}\label{ch:ekg-mm-executive-summary}
 The \gls{ekgmm} is a capability model designed to promulgate best practices across the knowledge graph community.
 It covers essential capabilities as well as standard evaluation criteria required for the design, implementation,
 and maintenance of an \gls{ekg}.
-
-The initial model was developed by \agnos and is being managed as an open-source initiative by the \gls{ekgf}.