Removed unused ST4 dependency

Part of #453

Author: jonahgraham

plugins/org.eclipse.embedcdt.core/.classpath

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry exported="true" kind="lib" path="lib/ST4-4.0.8.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
 			<attribute name="module" value="true"/>

plugins/org.eclipse.embedcdt.core/META-INF/MANIFEST.MF

@@ -508,6 +508,5 @@ Require-Bundle: org.eclipse.cdt.core;bundle-version="7.0.0",
  org.eclipse.core.variables;bundle-version="3.4.800",
  org.eclipse.debug.core;bundle-version="3.16.0",
  org.eclipse.core.expressions;bundle-version="3.7.0"
-Bundle-ClassPath: lib/ST4-4.0.8.jar,
- .
+Bundle-ClassPath: .
 Automatic-Module-Name: org.eclipse.embedcdt.core

plugins/org.eclipse.embedcdt.core/build.properties

@@ -19,7 +19,7 @@ bin.includes = META-INF/,\
                .,\
                plugin.xml,\
                plugin.properties,\
-               lib/ST4-4.0.8.jar,\
+
                about.html,\
                .options
 src.includes = about.html