patch 8.2.5090: MS-Windows: vim.def is no longer used

Problem:    MS-Windows: vim.def is no longer used.
Solution:   Delete vim.def. (Ken Takata, closes #10569)
diff --git a/Makefile b/Makefile
index 86c9f65..45cffff 100644
--- a/Makefile
+++ b/Makefile
@@ -56,7 +56,7 @@
 	cd runtime/indent && \
 		$(MAKE) clean && \
 		$(MAKE) test VIM="$(VIM_FOR_INDENTTEST)"
-		
+
 
 #########################################################################
 # 2. Creating the various distribution files.
@@ -93,8 +93,7 @@
 #   READMEdir/Contents, MAJOR/MINOR above, VIMMAJOR and VIMMINOR in
 #   src/Makefile, README.txt, README.md, src/README.md, READMEdir/README*.txt,
 #   runtime/doc/*.txt and make nsis/gvim_version.nsh.
-#   For a minor/major version: src/GvimExt/GvimExt.reg, src/vim.def,
-#   src/vim.manifest.
+#   For a minor/major version: src/GvimExt/GvimExt.reg, src/vim.manifest.
 # - Compile Vim with GTK, Perl, Python, Python3, TCL, Ruby, Lua, Cscope and
 #   "huge" features.  Add MZscheme if you can make it work.
 #   Use "make reconfig" after selecting the configure arguments.