remove nix-serve

hosts/thea/secrets/cache-privkey.age

@@ -1,10 +0,0 @@
-age-encryption.org/v1
--> ssh-ed25519 QvCxGg uhxooXKWZwPQUJ2Dxu127JDdXC3fjcEZPHK1n1nXSHs
-8ZGyYyxHfQ2xpquGVWRaNBILDPGfxRxVWYXTTbPcmvU
--> ssh-ed25519 /uqj4A ZJjtn6qWDXjOfYm/wa9Ch87yC7Wn/xIPvfLZkNfLD1A
-oh84B629HMAX7d6kBAks/mnbwYla0gzLxZ1yTTGuYrE
--> ssh-ed25519 70Re8Q B01cYHBUptpfgjrZrEb1UO7mjFNBxYQRphMIMDmh4QQ
-KOwjzGz+DIlX0dhJyhjAG5Z6j+MERa/+tDO4FOgxnGo
---- l76GMa1frNIiNiloxdLv9HqSpMPVZYFhS5oVE10U9QI
-<EFBFBD>îá²KÍ!›*dí¾”7N¦í½›3S7×è9þ$öWšLõªa¦7¹(Ì<>áؼCå¦ç¨<C3A7>„acøíßì
-†ÝÅÞ†‹ `OŠê-òP<C3B2>áïïXf<58>:ê¯È+‰ìº½½

hosts/thea/secrets/default.nix

@@ -1,9 +0,0 @@
-{ ... }:
-{
-  age.secrets = {
-    cache-privkey = {
-      file = ./cache-privkey.age;
-      mode = "700";
-    };
-  };
-}