Use first nightly with ghc-8.10.3

Author: jneira

stack-8.10.3.yaml

@@ -1,5 +1,4 @@
-resolver: nightly-2020-12-09
-compiler: ghc-8.10.3
+resolver: nightly-2021-01-01 # first ghc-8.10.3 nightly
 
 packages:
   - .
@@ -24,8 +23,6 @@ extra-deps:
   - data-tree-print-0.1.0.2@rev:2
   - floskell-0.10.4
   - fourmolu-0.3.0.0
-  - ghc-lib-8.10.3.20201220
-  - ghc-lib-parser-8.10.3.20201220
   - heapsize-0.3.0
   - implicit-hie-cradle-0.3.0.2
   - implicit-hie-0.1.2.5