VirtualMachine: Drop support for instruction arguments in functions

Author: adazem009

src/engine/virtualmachine.cpp

@@ -411,9 +411,6 @@ do_list_get_item : {
     DISPATCH();
 
 do_exec:
-    m_globalPos = pos;
-    int ret = m_functions[*++pos](this);
-    FREE_REGS(ret);
-    pos += ret;
+    FREE_REGS(m_functions[*++pos](this));
     DISPATCH();
 }

src/engine/virtualmachine.h

@@ -82,7 +82,6 @@ class LIBSCRATCHCPP_EXPORT VirtualMachine
         Engine *engine() const { return m_engine; };
 
         const Value *getInput(unsigned int index, unsigned int argCount) const { return m_regs[m_regCount - argCount + index]; };
-        unsigned int getFieldIndex(unsigned int index) const { return m_globalPos[index]; };
 
         void addReturnValue(const Value &v) { *m_regs[m_regCount++] = v; };
         void replaceReturnValue(const Value &v, unsigned int offset) { *m_regs[m_regCount - offset] = v; };
@@ -102,7 +101,6 @@ class LIBSCRATCHCPP_EXPORT VirtualMachine
 
         Target *m_target = nullptr;
         Engine *m_engine = nullptr;
-        unsigned int *m_globalPos = nullptr;
         bool m_atEnd = false;
 
         BlockFunc *m_functions;