tomcat-mysql-jdbc: remove build.sh

pkgs/servers/http/tomcat/jdbc/mysql/builder.sh

@@ -1,4 +0,0 @@
-source $stdenv/setup
-
-mkdir -p $out/lib
-ln -s $mysql_jdbc/share/java/mysql-connector-java.jar $out/lib/mysql-connector-java.jar

pkgs/servers/http/tomcat/jdbc/mysql/default.nix

@@ -2,12 +2,19 @@
 
 stdenv.mkDerivation {
   pname = "tomcat-mysql-jdbc";
-  builder = ./builder.sh;
-  buildInputs = [ mysql_jdbc ];
-
-  inherit mysql_jdbc;
   version = mysql_jdbc.version;
 
+  dontUnpack = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib
+    ln -s $mysql_jdbc/share/java/mysql-connector-java.jar $out/lib/mysql-connector-java.jar
+
+    runHook postInstall
+  '';
+
   meta = {
     platforms = lib.platforms.unix;
   };