Remove unused envCache (#3309)

**What this PR does / why we need it**:

**Which issue(s) this PR fixes**:

Fixes #

**Does this PR introduce a user-facing change?**:
<!--
If no, just write "NONE" in the release-note block below.
-->
```release-note
NONE
```

This PR was merged by Kapetanios.

pkg/app/server/grpcapi/piped_api.go

@@ -99,7 +99,6 @@ type PipedAPI struct {
 
 	appPipedCache        cache.Cache
 	deploymentPipedCache cache.Cache
-	envProjectCache      cache.Cache
 	pipedStatCache       cache.Cache
 	redis                redis.Redis
 
@@ -123,7 +122,6 @@ func NewPipedAPI(ctx context.Context, ds datastore.DataStore, sc cache.Cache, sl
 		commandOutputPutter:       cop,
 		appPipedCache:             memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
 		deploymentPipedCache:      memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
-		envProjectCache:           memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
 		pipedStatCache:            hc,
 		redis:                     rd,
 		webBaseURL:                webBaseURL,

pkg/app/server/grpcapi/web_api.go

@@ -119,7 +119,6 @@ type WebAPI struct {
 	appProjectCache        cache.Cache
 	deploymentProjectCache cache.Cache
 	pipedProjectCache      cache.Cache
-	envProjectCache        cache.Cache
 	pipedStatCache         cache.Cache
 	insightCache           cache.Cache
 	redis                  redis.Redis
@@ -160,7 +159,6 @@ func NewWebAPI(
 		appProjectCache:           memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
 		deploymentProjectCache:    memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
 		pipedProjectCache:         memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
-		envProjectCache:           memorycache.NewTTLCache(ctx, 24*time.Hour, 3*time.Hour),
 		pipedStatCache:            psc,
 		insightCache:              rediscache.NewTTLCache(rd, 3*time.Hour),
 		redis:                     rd,