Deprecate when declared(echo):echo (#13840)

compiler/astalgo.nim

@@ -24,7 +24,7 @@ proc typeToYaml*(conf: ConfigRef; n: PType, indent: int = 0, maxRecDepth: int =
 proc symToYaml*(conf: ConfigRef; n: PSym, indent: int = 0, maxRecDepth: int = - 1): Rope
 proc lineInfoToStr*(conf: ConfigRef; info: TLineInfo): Rope
 
-when declared(echo):
+
 # these are for debugging only: They are not really deprecated, but I want
 # the warning so that release versions do not contain debugging statements:
 proc debug*(n: PSym; conf: ConfigRef = nil) {.exportc: "debugSym", deprecated.}
@@ -628,7 +628,7 @@ proc value(this: var DebugPrinter; value: PNode) =
 
   this.closeCurly
 
-when declared(echo):
+
 proc debug(n: PSym; conf: ConfigRef) =
   var this: DebugPrinter
   this.visited = initTable[pointer, int]()

compiler/dfa.nim

@@ -91,7 +91,6 @@ proc echoCfg*(c: ControlFlowGraph; start=0; last = -1) {.deprecated.} =
   ## echos the ControlFlowGraph for debugging purposes.
   var buf = ""
   codeListing(c, buf, start, last)
-  when declared(echo):
   echo buf
 
 proc forkI(c: var Con; n: PNode): TPosition =

compiler/lookups.nim

@@ -100,7 +100,6 @@ proc searchInScopes*(c: PContext, s: PIdent): PSym =
     if result != nil: return
   result = nil
 
-when declared(echo):
 proc debugScopes*(c: PContext; limit=0) {.deprecated.} =
   var i = 0
   for scope in walkScopes(c.currentScope):

lib/pure/osproc.nim

@@ -892,7 +892,7 @@ elif not defined(useNimRtl):
 
     # Parent process. Copy process information.
     if poEchoCmd in options:
-      when declared(echo): echo(command, " ", join(args, " "))
+      echo(command, " ", join(args, " "))
     result.id = pid
     result.exitFlag = false