copies: delete _naivecopies() for eagerepo

Summary: We probably don't need special logic for eagerepo, which was added for tests. Let's delete `_naivecopies` for eagerepo and see what tests break.

Reviewed By: muirdm

Differential Revision: D55031909

fbshipit-source-id: 7afe53cd363f297fa6e567e1782f0722439e772e

eden/scm/sapling/copies.py

@@ -199,11 +199,6 @@ def _gitfindcopies(repo, oldnode, newnode):
 
 def pathcopies(x, y, match=None):
     """find {dst@y: src@x} copy mapping for directed compare"""
-    from . import eagerepo
-
-    if eagerepo.iseagerepo(x.repo()):
-        return _naivecopies(x, y, match)
-
     # we use git2 Rust library to do the actual work for git repo.
     if git.isgitformat(x.repo()):
         return _gitfindcopies(x.repo(), x.node(), y.node())
@@ -218,32 +213,6 @@ def pathcopies(x, y, match=None):
     return _chain(x, y, _backwardrenames(x, a), _forwardcopies(a, y, match=match))
 
 
-# Only handles special case of copies between parent and child,
-# optionally w/ wctx as well.
-def _naivecopies(x, y, match=None):
-    wctx = None
-    if y.rev() is None:
-        wctx = y
-        y = y.p1()
-
-    if y.p1() != x or y.p2().node() != node.nullid:
-        return {}
-
-    copies = {}
-    for f in y.files():
-        if match and not match(f):
-            continue
-        if f in y:
-            rename = y[f].renamed()
-            if rename:
-                copies[f] = rename[0]
-
-    if wctx:
-        copies = _chain(x, wctx, copies, _dirstatecopies(wctx.repo().dirstate, match))
-
-    return copies
-
-
 def _computenonoverlap(repo, c1, c2, addedinm1, addedinm2, baselabel=""):
     """Computes, based on addedinm1 and addedinm2, the files exclusive to c1
     and c2. This is its own function so extensions can easily wrap this call