Revert "Force CopyAssumeDepsUpToDate on Windows to test absolute install path behavior."

This reverts commit 68891ce4.

Cabal/Cabal.cabal

@@ -177,7 +177,6 @@ extra-source-files:
   tests/PackageTests/ConfigureComponent/Test/tests/Test.hs
   tests/PackageTests/CopyAssumeDepsUpToDate/CopyAssumeDepsUpToDate.cabal
   tests/PackageTests/CopyAssumeDepsUpToDate/Main.hs
-  tests/PackageTests/CopyAssumeDepsUpToDate/P.hs
   tests/PackageTests/CopyComponent/Exe/Main.hs
   tests/PackageTests/CopyComponent/Exe/Main2.hs
   tests/PackageTests/CopyComponent/Exe/myprog.cabal

Cabal/Distribution/Simple/Build/PathsModule.hs

@@ -206,11 +206,6 @@ generate pkg_descr lbi clbi =
           where var' = pkgPathEnvVar pkg_descr var
 
         -- In several cases we cannot make relocatable installations
-        -- WARNING: The CopyOneShot package test hacks
-        -- @absolute == True@ to disable relocatable programs
-        -- by giving the package a library as well.  If you change
-        -- this logic (e.g., we start to support relocatable libraries
-        -- by default) you will need to update this test.
         absolute =
              hasLibs pkg_descr        -- we can only make progs relocatable
           || isNothing flat_bindirrel -- if the bin dir is an absolute path

Cabal/tests/PackageTests/CopyAssumeDepsUpToDate/CopyAssumeDepsUpToDate.cabal

@@ -8,13 +8,6 @@ cabal-version:       >=1.10
 
 data-files: data
 
--- This library purely exists to convince Cabal on Windows
--- to not attempt to install this as prefix-relative executable.
-library
-  exposed-modules:     P
-  build-depends:       base
-  default-language:    Haskell2010
-
 executable myprog
   main-is:             Main.hs
   other-modules:       Paths_CopyAssumeDepsUpToDate

Cabal/tests/PackageTests/CopyAssumeDepsUpToDate/P.hs

-module P where

Cabal/tests/PackageTests/Tests.hs

@@ -545,10 +545,6 @@ tests config = do
         >>= assertOutputContains "a1 b2"
 
   -- Test copy --assume-deps-up-to-date
-  -- NB: This test has a HORRIBLE HORRIBLE hack to ensure that
-  -- on Windows, we don't try to make a prefix relative package;
-  -- specifically, we give the package under testing a library
-  -- so that we don't attempt to make it prefix relative.
   mtc "CopyAssumeDepsUpToDate" $ \step -> do
     withPackageDb $ do
       step "Initial build"
@@ -570,7 +566,7 @@ tests config = do
 
       step "Install executable"
       liftIO $ writeFile (pkg_dir </> "data") "bbb"
-      cabal "copy" ["--assume-deps-up-to-date", "exe:myprog"]
+      cabal "copy" ["--assume-deps-up-to-date", "myprog"]
       runInstalledExe' "myprog" []
         >>= assertOutputContains "aaa"