drop other OCaml DS modules

Author: cometkim

jscomp/build_tests/super_errors/expected/modules2.res.expected

@@ -1,8 +1,8 @@
 
   We've found a bug for you!
-  /.../fixtures/modules2.res:1:9-14
+  /.../fixtures/modules2.res:1:9-19
 
-  1 │ let b = List.b
+  1 │ let b = Belt.List.b
   2 │ 
 
-  The value b can't be found in List
+  The value b can't be found in Belt.List

jscomp/build_tests/super_errors/expected/primitives7.res.expected

@@ -1,17 +1,20 @@
 
   We've found a bug for you!
-  /.../fixtures/primitives7.res:3:24
+  /.../fixtures/primitives7.res:3:23
 
   1 │ /* Wanted list(float), found list(int) */
   2 │ let a = list{1, 2, 3}
-  3 │ List.map(n => n +. 2., a)
+  3 │ a->Belt.List.map(n => n +. 2.)
   4 │ 
 
-  This has type: list<int>
-  But this function argument is expecting: list<float>
-  
-  The incompatible parts:
-    int vs float
+  This has type: int
+  But it's being used with the +. operator, which works on: float
+
+  Floats and ints have their own mathematical operators. This means you cannot add a float and an int without converting between the two.
+
+  Possible solutions:
+  - Ensure all values in this calculation has the type float. You can convert between floats and ints via Belt.Float.toInt and Belt.Int.fromFloat.
+  - Change the operator to +, which works on int
 
   You can convert int to float with Belt.Int.toFloat.
   If this is a literal, try a number with a trailing dot (e.g. 20.).

jscomp/build_tests/super_errors/fixtures/modules2.res

@@ -1 +1 @@
-let b = List.b
+let b = Belt.List.b

jscomp/build_tests/super_errors/fixtures/primitives7.res

@@ -1,3 +1,3 @@
 /* Wanted list(float), found list(int) */
 let a = list{1, 2, 3}
-List.map(n => n +. 2., a)
+a->Belt.List.map(n => n +. 2.)