[prqlc-c] remove example links

src/third-party/prqlc-c/README.md

@@ -7,8 +7,6 @@ allows embedding in languages that support FFI — for example, Golang.
 
 ## Linking
 
-See [examples/minimal-c/Makefile](examples/minimal-c/Makefile).
-
 Copy the `.a` and `.so` files in a convenient place and add the following
 compile flags to Go (cgo):
 
@@ -16,9 +14,6 @@ compile flags to Go (cgo):
 
 ## Examples
 
-For a minimal example, see
-[examples/minimal-c/main.c](examples/minimal-c/main.c).
-
 Below is an example from an actual application that is using PRQL in Go.
 
 ```go