update location for has_init since it's an alg property

Author: SebastianM-C

src/alg_traits.jl

@@ -299,8 +299,15 @@ allows_late_binding_tstops(alg::AbstractODEAlgorithm) = false
 """
     $(TYPEDSIGNATURES)
 
-Trait declaration for whether the optimization algorithm supports the `init` interface. 
+Trait declaration for whether the optimization algorithm supports the `init` interface.
 
 Deprecated as this is not an optimization-specific idea and should use the traits for general caching.
 """
 supports_opt_cache_interface(alg) = false
+
+"""
+    $(TYPEDSIGNATURES)
+
+Trait for specifying whether the passed algorithm supports `init`.
+"""
+has_init(a::AbstractSciMLAlgorithm) = false

src/integrator_interface.jl

@@ -569,13 +569,6 @@ end
 
 ### Integrator traits
 
-"""
-    has_init(a::AbstractSciMLAlgorithm)
-
-Trait for specifying whether the passed algorithm supports `init`.
-"""
-has_init(a::AbstractSciMLAlgorithm) = false
-
 has_reinit(i::DEIntegrator) = false
 
 ### Display