Eval startup snippets explicitly #102

removing snippets support from the builder. They are collected, but otherwise unused

Author: andrus

jjava-kernel/src/main/java/org/dflib/jjava/kernel/JavaKernelBuilder.java

@@ -24,12 +24,10 @@ public abstract class JavaKernelBuilder<
     protected final String jShellExecControlID;
     protected JJavaExecutionControlProvider jShellExecControlProvider;
     protected String timeout;
-    protected final List<String> startupSnippets;
     protected final List<String> compilerOpts;
 
     protected JavaKernelBuilder() {
         this.jShellExecControlID = UUID.randomUUID().toString();
-        this.startupSnippets = new ArrayList<>();
         this.compilerOpts = new ArrayList<>();
     }
 
@@ -38,14 +36,6 @@ public B jShellExecControlProvider(JJavaExecutionControlProvider jShellExecContr
         return (B) this;
     }
 
-    /**
-     * Adds a snippet of script code to execute on startup.
-     */
-    public B startupSnippets(Iterable<String> code) {
-        code.forEach(startupSnippets::add);
-        return (B) this;
-    }
-
     public B compilerOpts(Iterable<String> opts) {
         opts.forEach(this.compilerOpts::add);
         return (B) this;