Miscelaneous cleanup of OPAM files

pgocaml.opam

@@ -25,4 +25,3 @@ depends: [
   "ocaml" {>= "4.05"}
   "re"
 ]
-flags: light-uninstall

pgocaml_ppx.opam

@@ -1,35 +1,26 @@
 opam-version: "2.0"
-synopsis: "Interface to PostgreSQL databases"
+synopsis: "PPX extension for PGOCaml"
 description: """
 PGOCaml provides an interface to PostgreSQL databases for OCaml applications.
-It includes a PPX syntax extension enabling one to directly embed SQL
-statements inside the OCaml code. The syntax extension uses the 'describe'
-feature of PostgreSQL to obtain type information about the database. This
-allows PGOCaml to check at compile-time if the program is indeed consistent
-with the database structure.
+This PPX syntax extension enables one to directly embed SQL statements inside
+the OCaml code. The extension uses the 'describe' feature of PostgreSQL to
+obtain type information about the database. This allows PGOCaml to check at
+compile-time if the program is indeed consistent with the database structure.
 """
 maintainer: "dario.teixeira@nleyten.com"
 authors: ["Richard W.M. Jones <rich@annexia.org>"]
 homepage: "https://github.com/darioteixeira/pgocaml"
 bug-reports: "https://github.com/darioteixeira/pgocaml/issues"
 dev-repo: "git+https://github.com/darioteixeira/pgocaml.git"
 license: "LGPL-2.0 with OCaml linking exception"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
+build: [["dune" "build" "-p" name "-j" jobs]]
 install: [["dune" "install"]]
 depends: [
-  "base-bytes"
-  "calendar"
-  "csv"
   "dune" {build}
-  "hex"
   "ocaml" {>= "4.05"}
-  "pgocaml" {= version}
-  "ppx_tools" {build}
-  "re"
-  "rresult" {build}
   "ocaml-migrate-parsetree"
+  "pgocaml" {= version}
+  "ppx_tools"
   "ppx_tools_versioned"
+  "rresult"
 ]
-flags: light-uninstall