Revert "GDScript: Add warnings that are set to error by default"

This reverts commit a166833bfa.

This caused multiple regressions.
Needs to be redone with more testing before merge.

Fixes #72501.

modules/gdscript/tests/scripts/analyzer/errors/function_dont_match_parent_signature_parameter_default_values.out

@@ -1,2 +1,2 @@
 GDTEST_ANALYZER_ERROR
-The function signature doesn't match the parent. Parent signature is "my_function(int = <default>) -> int".
+The function signature doesn't match the parent. Parent signature is "my_function(int = default) -> int".

modules/gdscript/tests/scripts/analyzer/features/hard_variants.gd

@@ -2,18 +2,16 @@ func variant() -> Variant: return null
 
 var member_weak = variant()
 var member_typed: Variant = variant()
-@warning_ignore("inference_on_variant")
 var member_inferred := variant()
 
 func param_weak(param = variant()) -> void: print(param)
 func param_typed(param: Variant = variant()) -> void: print(param)
-@warning_ignore("inference_on_variant")
 func param_inferred(param := variant()) -> void: print(param)
 
 func return_untyped(): return variant()
 func return_typed() -> Variant: return variant()
 
-@warning_ignore("unused_variable", "inference_on_variant")
+@warning_ignore("unused_variable")
 func test() -> void:
 	var weak = variant()
 	var typed: Variant = variant()

modules/gdscript/tests/scripts/analyzer/warnings/get_node_without_onready.gd

@@ -1,15 +0,0 @@
-extends Node
-
-var add_node = do_add_node() # Hack to have one node on init and not fail at runtime.
-
-var shorthand = $Node
-var with_self = self.get_node("Node")
-var without_self = get_node("Node")
-
-func test():
-	print("warn")
-
-func do_add_node():
-	var node = Node.new()
-	node.name = "Node"
-	add_child(node)

modules/gdscript/tests/scripts/analyzer/warnings/get_node_without_onready.out

@@ -1,14 +0,0 @@
-GDTEST_OK
->> WARNING
->> Line: 5
->> GET_NODE_DEFAULT_WITHOUT_ONREADY
->> The default value is using "$" which won't return nodes in the scene tree before "_ready()" is called. Use the "@onready" annotation to solve this.
->> WARNING
->> Line: 6
->> GET_NODE_DEFAULT_WITHOUT_ONREADY
->> The default value is using "get_node()" which won't return nodes in the scene tree before "_ready()" is called. Use the "@onready" annotation to solve this.
->> WARNING
->> Line: 7
->> GET_NODE_DEFAULT_WITHOUT_ONREADY
->> The default value is using "get_node()" which won't return nodes in the scene tree before "_ready()" is called. Use the "@onready" annotation to solve this.
-warn

modules/gdscript/tests/scripts/analyzer/warnings/inference_with_variant.gd

@@ -1,6 +0,0 @@
-func test():
-	var inferred_with_variant := return_variant()
-	print(inferred_with_variant)
-
-func return_variant() -> Variant:
-	return "warn"

modules/gdscript/tests/scripts/analyzer/warnings/inference_with_variant.out

@@ -1,6 +0,0 @@
-GDTEST_OK
->> WARNING
->> Line: 2
->> INFERENCE_ON_VARIANT
->> The variable type is being inferred from a Variant value, so it will be typed as Variant.
-warn

modules/gdscript/tests/scripts/analyzer/warnings/onready_with_export.gd

@@ -1,6 +0,0 @@
-extends Node
-
-@onready @export var conflict = ""
-
-func test():
-	print("warn")

modules/gdscript/tests/scripts/analyzer/warnings/onready_with_export.out

@@ -1,6 +0,0 @@
-GDTEST_OK
->> WARNING
->> Line: 3
->> ONREADY_WITH_EXPORT
->> The "@onready" annotation will make the default value to be set after the "@export" takes effect and will override it.
-warn

modules/gdscript/tests/scripts/analyzer/warnings/overriding_native_method.gd

@@ -1,5 +0,0 @@
-func test():
-	print("warn")
-
-func get(_property: StringName) -> Variant:
-	return null

modules/gdscript/tests/scripts/analyzer/warnings/overriding_native_method.out

@@ -1,6 +0,0 @@
-GDTEST_OK
->> WARNING
->> Line: 4
->> NATIVE_METHOD_OVERRIDE
->> The method "get" overrides a method from native class "Object". This won't be called by the engine and may not work as expected.
-warn