types and grammar: removing all first edition text

Author: getify

types-grammar/README.md

@@ -8,9 +8,4 @@
 
 * [Foreword](foreword.md) (by TBA)
 * [Preface](../preface.md)
-* [Chapter 1: Types](ch1.md)
-* [Chapter 2: Values](ch2.md)
-* [Chapter 3: Natives](ch3.md)
-* [Chapter 4: Coercion](ch4.md)
-* [Chapter 5: Grammar](ch5.md)
-* [Appendix A: Mixed Environment JavaScript](apA.md)
+* [Chapter 1: TODO](ch1.md)