Don't skip first _actual_ test

I failed to notice with the initial commit that the first tests in these
files are just the "version sanity check". This should start learners
off with a useful first failure.

exercises/nucleotide-count/tests/Tests.elm

@@ -10,8 +10,7 @@ tests =
     describe "NucleotideCount"
         [ test "the solution is for the correct version of the test" <|
             \() -> Expect.equal 2 version
-        , skip <|
-            test "empty dna strand has no nucleotides" <|
+        , test "empty dna strand has no nucleotides" <|
             \() ->
                 Expect.equal { a = 0, t = 0, c = 0, g = 0 }
                     (nucleotideCounts "")

exercises/run-length-encoding/tests/Tests.elm

@@ -10,8 +10,7 @@ tests =
     describe "RunLengthEncoding"
         [ test "the solution is for the correct version of the test" <|
             \() -> Expect.equal 2 version
-        , skip <|
-            test "encode simple" <|
+        , test "encode simple" <|
             \() -> Expect.equal "2A3B4C" (encode "AABBBCCCC")
         , skip <|
             test "decode simple" <|

exercises/sublist/tests/Tests.elm

@@ -10,8 +10,7 @@ tests =
     describe "Sublist"
         [ test "the solution is for the correct version of the test" <|
             \() -> Expect.equal 2 version
-        , skip <|
-            test "empty equals empty" <|
+        , test "empty equals empty" <|
             \() -> Expect.equal Equal (sublist [] [])
         , skip <|
             test "empty is a sublist of anything" <|