don't need builtins.mergeio when using base

Author: aryairani

unison-src/transcripts-using-base/fix2358.md

@@ -1,13 +1,9 @@
 
 Tests a former error due to bad calling conventions on delay.impl
 
-```ucm:hide
-.> builtins.mergeio
-```
-
 ```unison
 timingApp2 : '{IO, Exception} ()
-timingApp2 _ = 
+timingApp2 _ =
   printLine "Hello"
   delay 10
   printLine "World"

unison-src/transcripts-using-base/fix2358.output.md

@@ -3,7 +3,7 @@ Tests a former error due to bad calling conventions on delay.impl
 
 ```unison
 timingApp2 : '{IO, Exception} ()
-timingApp2 _ = 
+timingApp2 _ =
   printLine "Hello"
   delay 10
   printLine "World"

unison-src/transcripts-using-base/fix3166.md

@@ -1,7 +1,3 @@
-```ucm:hide
-.> builtins.mergeio
-```
-
 This file tests some obscure issues involved with abilities and over-applied
 functions.
 
@@ -15,7 +11,7 @@ Stream.map : (a -> b) -> '{Stream a} r -> '{Stream b} r
 Stream.map f stream = handle !stream with Stream.map.handler f
 
 Stream.map.handler : (a -> b) -> Request {Stream a} r -> '{Stream b} r
-Stream.map.handler f = cases 
+Stream.map.handler f = cases
   {Stream.emit a -> resume} -> 'let
     Stream.emit (f a)
     Stream.map f resume ()
@@ -27,12 +23,12 @@ increment n = 1 + n
 > Stream.toList (Stream.map increment (Stream.fromList [1,2,3]))
 
 > let
-    s1 = do emit 10 
+    s1 = do emit 10
             emit 20
             emit 30
             emit 40
     s2 = Stream.map (a -> a * 10) s1
-    Stream.toList s2 
+    Stream.toList s2
 ```
 
 ```unison

unison-src/transcripts-using-base/fix3166.output.md

@@ -11,7 +11,7 @@ Stream.map : (a -> b) -> '{Stream a} r -> '{Stream b} r
 Stream.map f stream = handle !stream with Stream.map.handler f
 
 Stream.map.handler : (a -> b) -> Request {Stream a} r -> '{Stream b} r
-Stream.map.handler f = cases 
+Stream.map.handler f = cases
   {Stream.emit a -> resume} -> 'let
     Stream.emit (f a)
     Stream.map f resume ()
@@ -23,12 +23,12 @@ increment n = 1 + n
 > Stream.toList (Stream.map increment (Stream.fromList [1,2,3]))
 
 > let
-    s1 = do emit 10 
+    s1 = do emit 10
             emit 20
             emit 30
             emit 40
     s2 = Stream.map (a -> a * 10) s1
-    Stream.toList s2 
+    Stream.toList s2
 ```
 
 ```ucm
@@ -57,7 +57,7 @@ increment n = 1 + n
            ⧩
            [2, 3, 4]
   
-    22 |     s1 = do emit 10 
+    22 |     s1 = do emit 10
            ⧩
            [100, 200, 300, 400]
 

unison-src/transcripts-using-base/fix3542.md

@@ -1,8 +1,3 @@
-
-```ucm:hide
-.> builtins.mergeio
-```
-
 ```unison
 arrayList v n = do
   use ImmutableByteArray read8

unison-src/transcripts-using-base/fix3542.output.md

@@ -1,4 +1,3 @@
-
 ```unison
 arrayList v n = do
   use ImmutableByteArray read8

unison-src/transcripts-using-base/fix4746.md

@@ -1,7 +1,3 @@
-```ucm:hide
-.> builtins.merge
-```
-
 Test case for a variable capture problem during let floating. The
 encloser wasn't accounting for variables bound by matches.
 
@@ -17,20 +13,20 @@ x _ = ()
 works x = x + 1
 
 run : '{Issue t} () -> '{Stream Text} ()
-run s = 
+run s =
   go = cases
-    { one x -> resume } -> 
+    { one x -> resume } ->
       emit "one"
       handle resume !x with go
-    { two x -> resume } -> 
+    { two x -> resume } ->
       emit "two"
       handle resume !x with go
-    { three x -> resume } -> 
+    { three x -> resume } ->
       emit "three"
       handle resume !x with go
     { _ } -> emit "done"
   do handle !s with go
-  
+
 > Stream.toList <| run do
   Issue.one do
     Issue.two do

unison-src/transcripts-using-base/fix4746.output.md

@@ -13,20 +13,20 @@ x _ = ()
 works x = x + 1
 
 run : '{Issue t} () -> '{Stream Text} ()
-run s = 
+run s =
   go = cases
-    { one x -> resume } -> 
+    { one x -> resume } ->
       emit "one"
       handle resume !x with go
-    { two x -> resume } -> 
+    { two x -> resume } ->
       emit "two"
       handle resume !x with go
-    { three x -> resume } -> 
+    { three x -> resume } ->
       emit "three"
       handle resume !x with go
     { _ } -> emit "done"
   do handle !s with go
-  
+
 > Stream.toList <| run do
   Issue.one do
     Issue.two do

unison-src/transcripts-using-base/hashing.md

@@ -1,9 +1,5 @@
 # Hashing and HMAC builtins
 
-```ucm:hide
-.> builtins.merge
-```
-
 Unison has cryptographic builtins for hashing and computing [HMACs](https://en.wikipedia.org/wiki/HMAC) (hash-based message authentication codes). This transcript shows their usage and has some test cases.
 
 ```ucm

unison-src/transcripts-using-base/namespace-dependencies.md

@@ -1,9 +1,5 @@
 # namespace.dependencies command
 
-```ucm:hide
-.external> builtins.merge
-```
-
 ```unison:hide
 external.mynat = 1
 mynamespace.dependsOnText = external.mynat Nat.+ 10