removed outdated logic from win installer - comparing build numbers to install over an old one in some cases.

build/conf/nsis/idea.nsi

@@ -247,32 +247,6 @@ Function VersionSplit
 FunctionEnd
 
 Function OnDirectoryPageLeave
-    StrCpy $IS_UPGRADE_60 "0"
-    ${InstDirState} "$INSTDIR" $R0
-    IntCmp $R0 1 check_build skip_abort skip_abort
-check_build:
-    FileOpen $R1 "$INSTDIR\build.txt" "r"
-    IfErrors do_abort
-    FileRead $R1 $R2
-    FileClose $R1
-    IfErrors do_abort
-    ${VersionSplit} ${MIN_UPGRADE_BUILD} $R3 $R4 $R5
-    ${VersionSplit} ${MAX_UPGRADE_BUILD} $R6 $R7 $R8
-    ${VersionSplit} $R2 $R9 $R2 $R0
-    StrCmp $R9 $R3 0 do_abort
-    IntCmp $R2 $R4 0 do_abort
-    IntCmp $R0 $R5 do_accept do_abort
-
-    StrCmp $R9 $R6 0 do_abort
-    IntCmp $R2 $R7 0 0 do_abort
-    IntCmp $R0 $R8 do_abort do_accept do_abort
-
-do_accept:
-    StrCpy $IS_UPGRADE_60 "1"
-    FileClose $R1
-    Goto skip_abort
-
-do_abort:
   ;check
   ; - if there are no files into $INSTDIR (recursively) just excepted property files
   ; - if property files have the same installation time.