chore: Remove skaffold from project (vectordotdev#17145)

Signed-off-by: Spencer Gilbert <[email protected]>

Author: spencergilbert

.github/actions/spelling/expect.txt

@@ -1137,7 +1137,6 @@ sinkbuilder
 sinknetworkbytessent
 sizecache
 Sizefor
-skaffold
 skinparam
 SKIPDATA
 skywalking

.github/workflows/integration-test.yml

@@ -12,7 +12,6 @@ on:
       - "lib/**"
       - "proto/**"
       - "scripts/**"
-      - "skaffold/**"
       - "src/**"
       - "tests/**"
       - "build.rs"

.github/workflows/k8s_e2e.yml

@@ -12,7 +12,6 @@ on:
       - "lib/**"
       - "proto/**"
       - "scripts/**"
-      - "skaffold/**"
       - "src/**"
       - "tests/**"
       - "build.rs"

.github/workflows/test.yml

@@ -55,7 +55,6 @@ jobs:
               - "lib/**"
               - "proto/**"
               - "scripts/**"
-              - "skaffold/**"
               - "src/**"
               - "tests/**"
               - "build.rs"