fix: remove maxHistory from HelmReleases since the default is now 5

Signed-off-by: Devin Buhl <devin@buhl.casa>

bootstrap/templates/kubernetes/apps/observability/grafana/app/helmrelease.yaml.j2

@@ -14,7 +14,6 @@ spec:
         kind: HelmRepository
         name: grafana
         namespace: flux-system
-  maxHistory: 2
   install:
     remediation:
       retries: 3

bootstrap/templates/kubernetes/apps/observability/kube-prometheus-stack/app/helmrelease.yaml.j2

@@ -15,7 +15,6 @@ spec:
         kind: HelmRepository
         name: prometheus-community
         namespace: flux-system
-  maxHistory: 2
   install:
     crds: CreateReplace
     remediation:

bootstrap/templates/kubernetes/apps/observability/kubernetes-dashboard/app/helmrelease.yaml.j2

@@ -14,7 +14,6 @@ spec:
         kind: HelmRepository
         name: kubernetes-dashboard
         namespace: flux-system
-  maxHistory: 2
   install:
     remediation:
       retries: 3